Best Application Development Software for Freelancers

Twilio

Twilio's application development tools empower developers to build robust communication solutions quickly and efficiently. With Twilio's APIs, developers can integrate voice, messaging, and authentication features into their applications, enhancing user engagement and experience. Using Twilio's Programmable Voice API, developers can create applications that handle inbound and outbound calls, implement call tracking, and provide interactive voice response (IVR) systems. The Messaging API allows for sending and receiving SMS, MMS, and WhatsApp messages, enabling real-time communication with users. Twilio's Verify API ensures secure user authentication through SMS, voice, and email verification, protecting applications from fraudulent activities. Additionally, Twilio's Flex platform offers a customizable digital engagement center for sales and support, allowing businesses to tailor customer interactions.

1,282 Ratings

Starting Price: $0.0085 per min

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Localazy

Localazy is a localization automation platform and powerful CAT tool. Speak everyone's language and expand your user base. Manage translations and enjoy both standard & innovative localization features. Tailor-made for growing apps and established businesses alike. Integrate Localazy to your build chain (Github Actions, Bitrise, CI/CD) and forget about all the hassle. Never touch localizable files again 😏. 👨🏽‍💻 UX built around developer productivity ➡️ Instant&free translations available ➡️ Unlimited apps (public & private) ➡️ Unlimited localization features ➡️ Unlimited languages & translations ➡️ Unlimited machine translations ➡️ Save money with shared translations ➡️ All integrations & formats ➡️ One-time payment for source phrase quota available

47 Ratings

Starting Price: $39

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Convertigo

Convertigo SA

Convertigo is the first open source Enterprise Grade Low Code / No Code platform to accelerate your Enterprise digitalization for reasonable costs. Dream an App, Make an App! Imagine you can make any app you want. From simple handy workforce apps to Enterprise grade multi-device transactional applications helping companies to accelerate their business. Get live sooner! Convertigo Low Code platform application development makes your Enterprise to get business success more efficient, delivering complete applications, similar to Pro Code but faster and cheaper. Reduce by 90% time and money needed to build and deploy business applications running on all type of devices such as smartphones, tablets and PCs whatever operating systems they are running on. Enjoy Open Source! This means that you can use Convertigo Community Edition Free of Charge. Open Source also solves the Vendor Lock-in paradigm by allowing you to quit the platform and still enjoy running your apps

Starting Price: $15 per month / user

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Intrexx

United Planet GmbH

Low-code allows you to create a comprehensive, integrative solution that makes your work processes agile and adaptable at any time in the future. As a result, you save time and energy without having to do without tailored, coherent and seamless solutions. Therefore, low-code really is the best of both worlds because it harmonizes simple development and individuality. Your path to a successful digital future with low-code development.

76 Ratings

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Jira

Atlassian

Jira is the only project management tool you need to plan and track work across every team. Jira by Atlassian is the #1 software development tool for teams planning and building great products. Trusted by thousands of teams, Jira offers access to a wide range of tools for planning, tracking, and releasing world-class software, capturing and organizing issues, assigning work, and following team activity. It also integrates with leading developer tools for end-to-end traceability. From short projects, to large cross-functional programs, Jira helps break big ideas down into achievable steps. Organize work, create milestones, map dependencies and more. Link work to goals so everyone can see how their work contributes to company objectives and stay aligned to what’s important. Your next move, suggested by AI. Atlassian Intelligence takes your big ideas and automatically suggests the tasks to help get it done.

44 Ratings

Starting Price: Free

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IntelliJ IDEA

JetBrains

IntelliJ IDEA is a JetBrains IDE for professional development in Java and Kotlin. It unlocks productive development and helps you write high-quality code with ease. Built to get the job done, it provides all of the essential tools and cutting-edge technology support you need. With a smooth, comfortable workflow and a strong focus on privacy and security, it lets you code with confidence and pleasure.

22 Ratings

Starting Price: $16.90 per user per month

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Sublime Text

Sublime HQ

A sophisticated text editor for code, markup and prose. Use Goto Anything to open files with only a few keystrokes, and instantly jump to symbols, lines or words. Make ten changes at the same time, not one change ten times. Multiple selections allow you to interactively change many lines at once, rename variables with ease, and manipulate files faster than ever. The Command Palette holds infrequently used functionality, like sorting, changing the syntax and changing the indentation settings. With just a few keystrokes, you can search for what you want, without ever having to navigate through the menus or remember obscure key bindings. Sublime Text has a powerful, Python API that allows plugins to augment built-in functionality. Package Control can be installed via the command palette, providing simple access to thousands of packages built by the community.

21 Ratings

Starting Price: $80 one-time fee

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Zoho Creator

Zoho

Zoho Creator is an all-in-one low-code application development software that is designed to help businesses digitize their operations without the hassle of traditional development. The platform lets businesses of all sizes 1. Manage their data and workflows, 2. Derive insights from their database, and 3. Link-up seamlessly with their existing software. We believe that each business is unique in its own way and our platform is built to address this uniqueness. More than 13,000 businesses with an excess of 7 million users around the world trust us to be their technology partner and you can also start your custom application journey today.

5 Ratings

Starting Price: $8/user/month/annually

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Omnis Studio

Omnis Software Ltd

Omnis Studio is a cross platform application development environment. Omnis Studio allows application developers and programmers to write application code and business logic once, and deploy their applications on virtually any platform or device, including desktop PCs on Windows and macOS, as well as tablets and phones on iOS, Android and Windows. Support for a large range of client devices is enabled using the Omnis JavaScript Client, a unique JavaScript based technology for rendering the application UI and web forms in a standard web browser on desktops and mobile devices. The integration of data and services is available in Omnis Studio via REST based Web Services, and functionality can be extended within Omnis Studio by utilizing its powerful and flexible external components API. Omnis is headquartered in the UK and has subsidiaries in USA, France and Germany and distributors for many other parts of the world.

5 Ratings

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Apache NetBeans

Apache Software Foundation

Apache NetBeans is a versatile, open-source Integrated Development Environment (IDE) used for developing applications across a wide range of programming languages, including Java, JavaScript, PHP, HTML5, and C/C++. Known for its modular architecture, NetBeans provides robust tools and features that cater to the needs of developers working on desktop, mobile, and web applications. It includes intelligent code editing, debugging, and profiling capabilities, along with a built-in visual GUI builder for designing Java-based user interfaces. NetBeans also offers support for version control systems like Git, SVN, and Mercurial, facilitating seamless team collaboration. As an Apache Software Foundation project, NetBeans benefits from an active community that continuously improves and expands its functionality, making it a reliable and flexible choice for developers across various domains.

4 Ratings

Starting Price: Free

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1C:Enterprise

1C Company

1C:Enterprise is a universal rapid application development platform for building and delivering business management and accounting solutions in HORECA, Retail, Manufacturing, Logistics, Finance, and other industries. It has the breadth of capability to address the diverse needs of today’s business through building solutions in a low-code environment. The 1C:Enterprise platform enables developers to rapidly build business applications of any complexity, from the most straightforward single-developer products to advanced ERP systems. 1C:Enterprise applications run on desktop, mobile, and web. The platform automatically adapts applications to the required OS, browser, and DBMS. Due to the support of multiple open standards (ODBC, REST API, OData, XML, JSON, COM, SOAP, HTTP, etc.), 1C:Enterprise applications easily integrate with any software and hardware, including equipment from various vendors.

3 Ratings

Starting Price: $200

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Kendo UI

Progress Software

Kendo UI is the ultimate collection of JavaScript UI components with libraries for jQuery, Angular, React, and Vue. Quickly build eye-catching, high-performance, responsive web applications—regardless of your JavaScript framework choice. Easily add advanced JavaScript components into your existing or new designs. Kendo UI’s hundreds of components handle everything you need to satisfy your users’ requirements. Add advanced components such as data grids, charts, schedulers, and calendars with just a few lines of code. Each is crafted for performance and customizability. Switching frameworks and starting new projects won’t require a new license or a big learning curve. Everything is included and up-to-date, APIs are consistent and theming is easy. Our QA process coupled with world-class support teams and a large user community means that our components will always work the way they’re supposed to—guaranteed.

2 Ratings

Starting Price: $899

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Neptune DXP

Neptune Software

Neptune Software's leading low-code app development platform - Neptune DXP – digitizes and optimizes business processes and user interfaces – at scale and with ease. Neptune DXP offers enterprise mobility, as well as the best low-code app development for SAP customers with the choice of no-code/low-code app development. The platform gives IT departments the right tools to build the apps they need. Neptune DXP provides a fast, cost-effective, and future-proof way to industrialize the development of custom applications (especially SAP Fiori, SAP mobile applications), turning your IT organization into an app factory, saving time and money on enterprise app development, app integration, and enterprise app operations.

2 Ratings

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Tyk

Tyk Technologies

Tyk is a leading Open Source API Gateway and Management Platform, featuring an API gateway, analytics, developer portal and dashboard. We power billions of transactions for thousands of innovative organisations. By making our capabilities easily accessible to developers, we make it fast, simple and low-risk for big enterprises to manage their APIs, adopt microservices and adopt GraphQL. Whether self-managed, cloud or a hybrid, our unique architecture and capabilities enable large, complex, global organisations to quickly deliver highly secure, highly regulated API-first applications and products that span multiple clouds and geographies.

1 Rating

Starting Price: $600/month

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Felgo

FELGO GmbH

Felgo is a cross-platform SDK for rapid, native app & game development for iOS, Android, Desktop & Embedded. Felgo’s biggest advantage is the big time savings and the easiness to learn compared to other development SDKs. You write less source code and make use of a single code base for all platforms. Less code means fewer bugs and faster releases of new updates from a single team for all platforms. Key Features for Mobile & Desktop: • Create stunning UIs and animations to wow your users and rank higher in the app stores. • Code & time savings up to 80% thanks to the reactive & declarative language and 200+ APIs. Key Features for Embedded: • Create high performance embedded system apps & second screen apps. • Native performance and rapid UI creation, powered by C++ & JavaScript. Felgo is an official Qt Technology Partner. Felgo is in use by over 50.000 developers worldwide and field-proven by Fortune 500 companies across all kinds of industries.

1 Rating

Starting Price: Free for personal usage.

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Ambassador

Ambassador Labs

Ambassador Edge Stack is a Kubernetes-native API Gateway that delivers the scalability, security, and simplicity for some of the world's largest Kubernetes installations. Edge Stack makes securing microservices easy with a comprehensive set of security functionality, including automatic TLS, authentication, rate limiting, WAF integration, and fine-grained access control. The API Gateway contains a modern Kubernetes ingress controller that supports a broad range of protocols including gRPC and gRPC-Web, supports TLS termination, and provides traffic management controls for resource availability. Why use Ambassador Edge Stack API Gateway? - Accelerate Scalability: Manage high traffic volumes and distribute incoming requests across multiple backend services, ensuring reliable application performance. - Enhanced Security: Protect your APIs from unauthorized access and malicious attacks with robust security features. - Improve Productivity & Developer Experience

1 Rating

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K.Explorer

Morphis Tech

A state-of-the-art AI that builds better software, cheaper and faster. K.Explorer is an AI powered Code Assistant trained on many millions of private corporate lines of code, for specific domains, and on billions of public and open-source lines of code for general purposes. Its code auto-completion features suggest code completions and entire function bodies as you type or as you search the engine for help. To make development faster and more agile it even supports Natural Language for programmers to get guidance while telling a text story about the code they want to write.

1 Rating

Starting Price: Free

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JFrog Artifactory

JFrog

The Industry Standard Universal Binary Repository Manager. Supports all major package types (over 27 and growing) such as Maven, npm, Python, NuGet, Gradle, Go, and Helm including Kubernetes and Docker as well as integration with leading CI servers and DevOps tools that you already use. Additional functionalities include: - High Availability that scales to infinity with active/active clustering of your DevOps environment and scales as business grows - On-Prem, Cloud, Hybrid, or Multi-Cloud Solution - De Facto Kubernetes Registry managing application packages, operating system’s component dependencies, open source libraries, Docker containers, and Helm charts with full visibility of all dependencies. Compatible with a growing list of Kubernetes cluster providers.

1 Rating

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Wing Python IDE

Wingware

Wing Python IDE was designed from the ground up for Python, to bring you a more productive development experience. Type less and let Wing worry about the details. Get immediate feedback by writing your Python code interactively in the live runtime. Easily navigate code and documentation. Avoid common errors and find problems early with assistance from Wing's deep Python code analysis. Keep code clean with smart refactoring and code quality inspection. Debug any Python code. Inspect debug data and try out bug fixes interactively without restarting your app. Work locally or on a remote host, VM, or container. Wingware's 21 years of Python IDE experience bring you a more Pythonic development environment. Wing was designed from the ground up for Python, written in Python, and is extensible with Python. So you can be more productive.

1 Rating

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RAD Studio

Embarcadero

The Ultimate RAD environment loved by developers for quickly building high-performance native cross-platform applications in modern C++ and Delphi using powerful visual design tools and integrated toolchains. Smarter code navigation when refactoring. Auto code completion with Tab key. LSP awareness of Include files. Auto restart of LSP server. Class helper support. Array suggestions when assigning arrays. Inactive code highlighting in Code Editor. High-DPI support in the IDE, with full support for the latest 4k+ monitors, and cleaner and sharper fonts and icons throughout. Improved FMX High-DPI support for Windows and Desktop with a visibly superior desktop UI. Reduces the complexities of rapidly building and deploying a multi-tier turn-key enterprise REST API application server with Swagger support.

1 Rating

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Delphi

Embarcadero

Delphi is the ultimate IDE for creating cross-platform, natively compiled apps. Are you ready to design the best UIs of your life? Our award winning VCL framework for Windows and FireMonkey (FMX) visual framework for cross-platform UIs provide you with the foundation for intuitive, beautiful user interfaces that wow on every platform: Windows, macOS, iOS, and Android. Design your master UI layout once, then easily customize platform- and device-specific views without duplication of design effort. Drag-and-drop visual and non-visual components from the palette using our visual designer. Visually connect user interface elements to data sources using the LiveBindings Designer. Real-time design validation using Live On-Device Preview to broadcast the active form to multiple devices simultaneously. Add responsive design with resolution-aware components for desktop, tablets, and smartphones. Real, platform-specific native controls for an improved user experience.

1 Rating

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C++Builder

Embarcadero

C++Builder is a fast, integrated design and development suite for modern apps. Are you ready to design the best UIs of your life? Our award winning VCL framework for Windows and FireMonkey (FMX) visual framework for cross-platform UIs provide you with the foundation for intuitive, beautiful user interfaces that wow on every platform: Windows, macOS, iOS, and Android. Design your master UI layout once, then easily customize platform- and device-specific views without duplication of design effort. Drag-and-drop visual and non-visual components from the palette using our visual designer. Visually connect user interface elements to data sources using the LiveBindings Designer. Real-time design validation using Live On-Device Preview to broadcast the active form to multiple devices simultaneously. Add responsive design with resolution-aware components for desktop, tablets, and smartphones. Real, platform-specific native controls for an improved user experience.

1 Rating

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Scriptcase

Netmake

An efficient web development low-code platform. It helps you to create complete web systems and Business Intelligence solutions fast and easy! Scriptcase enables you to design, develop and elegant, responsive, database-driven applications using only your web browser. A powerful PHP generator for you to develop fast, simple, secure at a low cost. Connect with your database (MySQL, MariaDB, PostgreSQL, SQLite, Interbase, SQL Azure, Amazon Aurora, Firebird, Access, Oracle, MS SQLServer, DB2, SyBase, Informix or ODBC layer) and generate web applications based on your tables, simply and safely. Make the data access and maintenance an uncomplicated step! Scriptcase offers an XLS, CSV and ACCESS spreadsheet import and conversion features for the databases supported by Scriptcase. With this import tool you can easily transform your spreadsheets into system applications.

3 Ratings

Starting Price: $349

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Backendless

Backendless is a Visual App Development Platform (VADP) that combines API, user, and database management functionality with a user-friendly, web-based interface and UI Builder. Backendless offers the ability to send emails and push notifications and supports real-time chat and geolocation-based functionality. A Backendless application can be customized with manually written code or using our Codeless logic builder. The platform can be hosted on our cloud servers or installed and managed on your own private servers. The Backendless UI Builder allows you to build fully functional web and mobile apps. You can use the UI Builder, or Backendless works seamlessly with virtually any client-side environment, automatically morphing data to the proper format for the frontend operating system. A Backendless database can also be connected to external databases, allowing you to maintain existing data sources while also being able to manage those databases using Backendless' intuitive interface.

Starting Price: $15.00/month

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Appsmith

Appsmith is a low code developer tool for quickly building UIs and connecting to a wide range of data sources. You can drag and drop pre-built components to build UI on the open grid-style canvas. When it comes to adding logic, transforming data, and defining workflows. Appsmith lets you insert plain Javascript right inside any widget, query, or almost any other setting. - Start by linking to an existing datasource such as a database or an API. Appsmith has plug-and-play support for most databases, Rest APIs, and GraphQL, so you can seamlessly import your data. - Next, you can use pre-made widgets to easily layout an app, and move them around to optimize usability - Get the app running by connecting the UI to the datasource. You can do this by writing queries or calling APIs. Remember, you can control everything with JavaScript! - Finally, deploy the app. You can also integrate with your CI/CD, create git branches for different environments to safely develop, test and deploy

Starting Price: $0.4/hour/user

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VIKTOR

Build and distribute any web application you can imagine. VIKTOR is the development platform for the engineering and construction industry. Empower your organisation to build and distribute scalable applications. Enter into a new era in engineering. Use our digital building blocks to rapidly create professional web-based applications and share them with everyone you want. VIKTOR is the most used application development platform in the engineering and construction industry. It enables engineers to quickly build their own software solutions and share them with everyone. Engineers and other domain experts know your business best. Create an agile organization by empowering them to adopt new technologies and rapidly create, test, distribute, and scale new software solutions according to their needs. This results in better solutions, high adoption rates, and lower development costs.

Starting Price: 0/per month/user

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Telepresence

Ambassador Labs

Telepresence streamlines your local development process, enabling immediate feedback. You can launch your local environment on your laptop, equipped with your preferred tools, while Telepresence seamlessly connects them to the microservices and test databases they rely on. It simplifies and expedites collaborative development, debugging, and testing within Kubernetes environments by establishing a seamless connection between your local machine and shared remote Kubernetes clusters. Why Telepresence: Faster feedback loops: Spend less time building, containerizing, and deploying code. Get immediate feedback on code changes by running your service in the cloud from your local machine. Shift testing left: Create a remote-to-local debugging experience. Catch bugs pre-production without the configuration headache of remote debugging. Deliver better, faster user experience: Get new features and applications into the hands of users faster and more frequently.

Starting Price: Free

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FastScript

Fast Reports

FastScript is a cross-platform, multi-language scripting engine. It is useful for programmers who want to add scripting ability to their projects. FastScript can be used in Delphi 7-XE8, C++Builder 2005-XE8, Embarcadero RAD Studio 11 and Lazarus. FastScript is written entirely in 100% Object Pascal. A unique feature of FastScript is its ability to use several languages (PascalScript, C++Script, BasicScript, and JScript). This allows you to write scripts using your favorite language. FastScript does not use the Microsoft Scripting Host so it can be used in both the Windows and Linux environments and also in Mac OS. FastScript offers a wide range of features, including cross-platform scripting, fast code execution, a small footprint, a large variety of tools, and excellent scaling options. Use FastScript to make your applications really flexible and powerful!

Starting Price: $79.00/developer

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Enterprise Universal ERP API

STFB Inc.

Enterprise Universal ERP API is a complete HTTP REST API with hundreds of accounting & ERP functions that you can use to add accounting and ERP functionality to your own applications! All basic Accounting and ERP functionality is included and made available via API calls! GL, AR, AP, OE, Inv, Warehousing, CRM, MRP, and ECommerce calls included. Since the Enterprise ERP API is implemented in stored procedures, and can be called either directly or via HTTP REST, ANY LANGUAGE or PLATFORM can be used to access the ERP business logic! IF the language / development environment / software platform can access MySQL or SQL Server, then it can use the ERP business logic directly! One of the BEST new features of this API, is that it will allow your company to hire outside developers to build sub-systems and add-ons to your software product WITHOUT having to SHARE THE SOURCE CODE WITH THEM! You can simply send your new outside developers the API Call List & API Documentation!

Starting Price: $999.99 One Time

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Rethink Workflow

Rethink Workflow, Inc.

Rethink Workflow is a free, simple, powerful, and secure business process automation tool that allows NGOs, businesses, and enterprises to create forms and design workflows online.

Starting Price: $2.99/month/user

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Best Application Development Software for Freelancers

Compare the Top Application Development Software for Freelancers as of April 2025

What is Application Development Software for Freelancers?

Twilio

Localazy

Convertigo

Intrexx

Jira

IntelliJ IDEA

Sublime Text

Zoho Creator

Omnis Studio

Apache NetBeans

1C:Enterprise

Kendo UI

Neptune DXP

Tyk

Felgo

Ambassador

K.Explorer

JFrog Artifactory

Wing Python IDE

RAD Studio

Delphi

C++Builder

Scriptcase

Backendless

Appsmith

VIKTOR

Telepresence

FastScript

Enterprise Universal ERP API

Rethink Workflow

Best Application Development Software for Freelancers

Compare the Top Application Development Software for Freelancers as of April 2025

What is Application Development Software for Freelancers?

Twilio

Localazy

Convertigo

Intrexx

Jira

IntelliJ IDEA

Sublime Text

Zoho Creator

Omnis Studio

Apache NetBeans

1C:Enterprise

Kendo UI

Neptune DXP

Tyk

Felgo

Ambassador

K.Explorer

JFrog Artifactory

Wing Python IDE

RAD Studio

Delphi

C++Builder

Scriptcase

Backendless

Appsmith

VIKTOR

Telepresence

FastScript

Enterprise Universal ERP API

Rethink Workflow

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