Best Code Search Engines
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What are Code Search Engines?
Code search engines are specialized search tools that allow developers to search through codebases, repositories, or libraries to find specific functions, variables, classes, or code snippets. These tools are designed to help developers quickly locate relevant parts of code, analyze code quality, and identify reusable components. Code search engines often support various programming languages, providing search capabilities like syntax highlighting, filtering by file types or attributes, and even advanced search options using regular expressions. They are particularly useful for navigating large codebases, enhancing code reuse, and improving overall productivity in software development projects. Compare and read user reviews of the best Code Search engines currently available using the table below. This list is updated regularly.
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1
GitHub
GitHub
GitHub is the world’s most secure, most scalable, and most loved developer platform. Join millions of developers and businesses building the software that powers the world. Build with the world’s most innovative communities, backed by our best tools, support, and services. If you manage multiple contributors , there’s a free option: GitHub Team for Open Source. We also run GitHub Sponsors, where we help fund your work. The Pack is back. We’ve partnered up to give students and teachers free access to the best developer tools—for the school year and beyond. Work for a government-recognized nonprofit, association, or 501(c)(3)? Get a discounted Organization account on us.Starting Price: $7 per month -
2
GitLab
GitLab
GitLab is a complete DevOps platform. With GitLab, you get a complete CI/CD toolchain out-of-the-box. One interface. One conversation. One permission model. GitLab is a complete DevOps platform, delivered as a single application, fundamentally changing the way Development, Security, and Ops teams collaborate. GitLab helps teams accelerate software delivery from weeks to minutes, reduce development costs, and reduce the risk of application vulnerabilities while increasing developer productivity. Source code management enables coordination, sharing and collaboration across the entire software development team. Track and merge branches, audit changes and enable concurrent work, to accelerate software delivery. Review code, discuss changes, share knowledge, and identify defects in code among distributed teams via asynchronous review and commenting. Automate, track and report code reviews.Starting Price: $29 per user per month -
3
Bitbucket
Atlassian
Bitbucket is more than just Git code management. Bitbucket gives teams one place to plan projects, collaborate on code, test, and deploy. Free for small teams under 5 and priced to scale with Standard ($3/user/mo) or Premium ($6/user/mo) plans. Keep your projects organized by creating Bitbucket branches right from Jira issues or Trello cards. Build, test and deploy with integrated CI/CD. Benefit from configuration as code and fast feedback loops. Approve code review more efficiently with pull requests. Create a merge checklist with designated approvers and hold discussions right in the source code with inline comments. Bitbucket Pipelines with Deployments lets you build, test and deploy with integrated CI/CD. Benefit from configuration as code and fast feedback loops. Know your code is secure in the Cloud with IP whitelisting and required 2-step verification. Restrict access to certain users, and control their actions with branch permissions and merge checks for quality code.Starting Price: $15 per month -
4
BLACKBOX AI
BLACKBOX AI
BLACKBOX.AI is a Coding LLM designed to transform the way we build software. By building BLACKBOX.AI, our goal is to: - Accelerate the pace of innovation within companies by making engineers 10X faster in building and releasing products - Accelerate the growth in software engineers around the world and 10X the number of engineers from ~100M to 1B Capabilities: 1. Natural Language to Code 2. Real-Time Knowledge 3. Code Completion 4. VISION 5. Code Commenting 6. Commit Message Generation 7. Chat with your Code Files BLACKBOX is built to answer coding questions and assist you write code faster. Whether you are fixing a bug, building a new feature or refactoring your code, ask BLACKBOX to help. BLACKBOX has real-time knowledge of the world, making it able to answer questions about recent events, technological breakthroughs, product releases, API documentations & more BLACKBOX integrates directly with VSCode to automatically suggests the next lines of code.Starting Price: Free -
5
You.com
You.com
You.com is an AI-powered search engine designed to provide a more personalized and efficient browsing experience. Unlike traditional search engines, You.com prioritizes user control, allowing individuals to customize their search preferences and filter results based on their needs. It integrates advanced artificial intelligence to deliver precise answers, summaries, and actionable insights, often drawing from trusted sources and real-time data. With an emphasis on privacy, You.com avoids tracking user behavior, making it a preferred choice for those seeking a secure, ad-free, and customizable search environment. Its unique interface also supports productivity by offering app-like integrations for tasks like coding, writing, and exploring creative content.Starting Price: Free -
6
Phind
Phind
The AI search engine for developers. Phind offers progressive web app support. You can add Phind to your home screen and use it as a native app. To do this on iOS, go to phind.com in Safari and tap the share button, then tap "add to home screen." To do this on Android, tap the menu button in Chrome and then tap "add to home screen." You can artificially change how results are ranked by adding domain names and keywords. Paste the url of a website you'd like to rank differently, we'll automatically extract and add the domain name to your list. You can also enter a domain or keyword manually. If you have a rule with the keyword ".rs", then we will apply it to all domains with ".rs" e.g rustup.rs, releases.rs, cxx.rs, cheats.rs. Our vision is for the search to be as seamless and informative as talking to a smart friend. Phind (formerly Hello) is a search engine that simply tells users what the answer is. Optimized for developers and technical questions. -
7
Fisheye
Atlassian
Search, track, and visualize code changes. Visualize and report on activity and search for commits, files, revisions, or teammates across SVN, Git, Mercurial, CVS and Perforce. View changes with a side-by-side or unified diff tool and link your Jira Software issues directly to diffs, changeset details, or full source. Get a graphical representation of activity in your source, report on lines of code over time, and get a visual audit trail of changes. Follow what's happening throughout your projects with activity streams showing commits, Jira Software issues, and Crucible review activities across your team. Find code fast with search using any artifact in your code: file names, commit messages, authors, text, and even historical changes. Browse, index, and search all your source from all your source code management systems including SVN, Git, Mercurial, CVS and Perforce – all in one tool. Upgrade your workflow with Jira Software, Bitbucket Server, Bamboo and more.Starting Price: $10 one-time payment -
8
Sourcetrail
Coati Software
Sourcetrail is an interactive source explorer that simplifies navigation in existing source code by indexing your code and gathering data about its structure. Sourcetrail then provides a simple interface consisting of three interactive views, each playing a key role in helping you obtain the information you need. Search: Use the search field to quickly find and select indexed symbols in your source code. The autocompletion box will instantly provide an overview of all matching results throughout your codebase. Graph: The graph displays the structure of your source code. It focuses on the currently selected symbol and directly shows all incoming and outgoing dependencies to other symbols. Code: The Code view displays all source locations of the currently selected symbol in a list of code snippets. Clicking on a different source location allows you to change the selection and dig deeper.Starting Price: $195.00/one-time/user -
9
Krugle
Krugle
Security teams can quickly pinpoint the spread of Security Issues from CVE, OWASP, Stackoverflow and other published resources. Krugle helps developers discover important code fixes, share problem solving insights and troubleshoot complex problems. Support engineers use Krugle Enterprise to share existing fixes, document issues, verify project details and track down key resources. Krugle delivers continuously updated, federated access to all of the code and technical information that defines your business. Krugle search helps your organization pinpoint critical code patterns and application issues - immediately and at massive scale.Starting Price: 0 -
10
PublicWWW
PublicWWW
Ultimate solution for digital marketing and affiliate marketing research, PublicWWW allow you to perform searches this way, something that is not possible with other regular search engines. Find related websites through the unique HTML codes they share, i.e. widgets & publisher IDs. Identify sites using certain images or badges. Find out who else is using your theme. References to use a library or a platform. Find code examples on the internet. Figure out who is using what JS widgets on their sites.Starting Price: $49 per month -
11
Devv
Devv
Lightning-fast answers, documentation, and code snippets for your dev queries. AI-powered agents decipher your complex questions and craft tailored solutions. Seamlessly interact with your repositories for contextualized search and assistance. Unlock unlimited searches with the most powerful model GPT-4. Devv is the next-gen search engine for developers. Devv offers a new mode designed to deliver more accurate and detailed responses. Multi-agent architecture that employs different agents and language models based on the specific requirements of the task at hand. Now, you have the ability to generate Python code and execute it directly within Devv. Devv is solely dedicated to developing scenarios. This can let us focus more on building better search indices and models. Our mission is to create the premier information retrieval tool for developers.Starting Price: $12 per month -
12
NerdyData
NerdyData
You'll never run out of leads as long as your competition are in business. Go after prospects who obviously have the budget and demand for your better software. Get the up-to-date snapshot of your marketshare and your competition. Easily power ABM strategies and advertising campaigns for each competitor. With our Free Browser Extension you can analyze any website's tech stack and tech budget before you reach out to them. NerdyData's crawlers render Javascript, ideal for identifying web technologies (cookies, variables, network requests, etc.). Historical Reports use a vastly larger dataset, but is limted to raw HTML and HTTP headers. So while it won't contain dynamic content, you should expect more results due to the larger dataset.Starting Price: $75 per month -
13
Documatic
Documatic
Ask a question of your codebase. Documatic intelligently gets you the answer. Documatic search uses AI to understand your question, and identifies the bit of documentation or code containing the answer. You can ask questions from the Documatic platform, vscode and slack. Easily visualize how the important infrastructure in your codebase interacts. Never again will you question whether a function impacts your AWS resources! Documatic builds a map of your codebase so you can quickly see the flow of information from file to file, folder to folder. We highlight important infrastructure like cloud, databases and payment processors so you always know the impacts of your code on security and costs. Generate documentation in the changes in your codebase each day, week, or month. -
14
Bloop
Bloop
Natural language search surfaces internal libraries and existing patterns. This helps prevent stale code, dependency bloat and frees up time to work on unsolved problems. Making it easier to discover internal APIs improves adoption and reduces duplication. bloop’s natural language search returns accurate results in less time, making it a powerful alternative to slow keyword searches and asking colleagues for help. bloop understands your codebase. When responding to natural language searches, complex concepts are summarised and the intention behind code is explained. You can follow up a natural language search with a codebase change. This is ideal for small changes and can be initiated by anyone on the team, regardless of coding ability. Precise code navigation in 10+ languages helps you move quickly through refs and defs.Starting Price: $12 per user per month -
15
YouPro
You.com
With YouPro, experience the freedom of unlimited access to cutting-edge AI models. You can search, code, write, and create images all in one place. Experience conversational web searches with more accurate and comprehensive results. AI advanced reasoning provides more insightful and reliable research. With access to our powerful AI art generator, you can create unlimited, vibrant images for emails, website copy, printed materials, and more. All copyright-free and royalty-free! Access to all AI models, including GPT-4o, OpenAI o1, and Claude 3.5 Sonnet. Unlimited file uploads, up to 50MB per query. Unlimited queries, including all AI models and Research and Custom Agents.Starting Price: $20/month -
16
Kooder
Kooder
Kooder is an open source code search project, offering code, repositories and issues search service for code hosting platforms including Gitee, GitLab and Gitea. There are two modules, gateway and indexer. Gateway is integrated inside gateway under default config. -
17
livegrep
livegrep
Livegrep is a tool, partially inspired by Google Code Search, for interactive regex search of ~gigabyte-scale source repositories. To run livegrep, you need to invoke both the codesearch backend index/search process, and the livegrep web interface. To run the sample web interface over livegrep itself, once you have built both codesearch and livegrep. The codesearch binary is responsible for reading source code, maintaining an index, and handling searches. livegrep is stateless and relies only on the connection to codesearch over a TCP connection. By default, codesearch will build an in-memory index over the repositories specified in its configuration file. You can, however, also instruct it to save the index to a file on disk. This has the dual advantages of allowing indexes that are too large to fit in RAM, and of allowing an index file to be reused. -
18
searchcode
searchcode
Type any term you want to search for in the search box and press the enter key. Generally best results can be gained by searching for terms that you expect to be close to each other on the same line. Other characters are treated as part of the search itself. This means that a search for something such as i++; is not only a legal search it is likely to return results for most code bases. Any search can be filtered down to a specific source or identified language using the refinement options. Select one or more of each and click the "Apply" button to do this. Filters on the normal interface persist between searches. This allows you to select a specific repository or language and continue searching. To clear applied filters uncheck the filters individually and click on "Filter Selected". You can also click "Clear Filters" button to clear all active filters. The HTML only page filters are cleared between every new search. -
19
Snipplr
Snipplr
Snipplr was designed to solve a simple problem. We had too many random bits of code and HTML scattered all over our computers. We'd hunt and dig around for five minutes looking for the couple lines of code we wrote four projects ago just so we wouldn't have to retype them. We're lazy. We needed a way to keep all of our stuff organized. Snipplr is our solution. Now, all of our code snippets are stored in one place. Best of all, the other guys at work have access to each others' code library. With Snipplr you can keep all of your frequently used code snippets in one place that's accessible from any computer. You can share your code with other visitors and use what they post, too. -
20
merobase
merobase
Merobase is a search engine solution that helps developers find, share and reuse software components from the Internet. merobase supports the following candidate matching solutions: Test-driven search (software testing) and interface-driven code search and keyword-based search. -
21
Grep
Grep
Grep by Vercel is a code search tool that allows users to search for code, files, and paths across half a million public GitHub repositories. It supports searching by regular expressions, enabling precise and flexible queries. -
22
Hound
Etsy
Hound is an extremely fast source code search engine. The core is based on this article (and code) from Russ Cox: Regular expression matching with a trigram index. Hound itself is a static React frontend that talks to a Go backend. The backend keeps an up-to-date index for each repository and answers searches through a minimal API. Currently Hound is only tested on MacOS and CentOS, but it should work on any *nix system. Hound on Windows is not supported but we've heard it compiles and runs just fine (although it helps to to exclude your data folder from Windows Search Indexer). -
23
OpenGrok
OpenGrok
It understands various program file formats and history from many Source Code Management systems. In other words it lets you grok (profoundly understand) source code and is developed in the open, hence the name OpenGrok. It is written in Java. Search for full text, definitions, symbols, path and revision history. Show the matching lines in search results. Online cross-reference with syntax highlighting, highly customizable look and feel using CSS stylesheets. Plugins can be written for new programing language or revision control systems. -
24
Codase
Codase
Codase hosts huge amount of open source codes providing a much better coverage, as it covers codes usually hidden inside compressed files and source control repositories, where general search engines fail to find and index. In addition, Codase only indexes and searches high quality codes with every line of code literally validated and compiled by intelligent and powerful source code analysis engine. Codase is a privately held company based in silicon valley, founded by Dr. Huihong Luo and other veterans. We are a group of innovative and passionate professionals with diverse technologies, business background and proven track of records. We are committed to make Codase the world's best search engine for source codes in terms of features, quality, performance and code coverage. If you are a developer, you may find Codase useful, since improving your coding productivity is our goal. -
25
Open Hub
Black Duck
Compare project statistics, including activity, codebase, contributors, and more in either a graphical or side-by-side view. Compare languages based on commits, contributors, lines of code changes, and the total number of new projects. Compare types of repositories based on how many of that type are registered with Open Hub. View statistics per language, including most experienced contributors, recent contributors, total lines of code analyzed, total lines of comments, and more. -
26
SymbolHound
SymbolHound
SymbolHound is a search engine that doesn't ignore special characters. This means you can easily search for symbols like &, %, and π. We hope SymbolHound will help programmers find information about their chosen languages and frameworks more easily. SymbolHound is primarily a programming search engine. Searching for symbols is just not that useful for the average Internet user. Google could probably very easily do this, but it wouldn't make their search engine any better for the vast majority of their user base; in fact, it might make it worse. But for the small percentage of people who find themselves needing to search for special characters, Google is not useful. However, SymbolHound is a symbol search engine and is perfect for that query. -
27
DataFragment
DataFragment
DataFragment is a search engine for source code used by thousands of leading tech companies around the world. We help them on many aspects going from finding new clients for their SaaS products to auditing cyber-security risks. We crawls the whole web with our technology in order to construct the biggest source code searchable database.Starting Price: $49.99 -
28
Augoor
Augoor
Augoor transforms static code into dynamic knowledge, enabling teams to navigate, document, and optimize complex systems effortlessly. By extracting structures, relationships, and context, Augoor builds a living knowledge graph that accelerates the development lifecycle. Its AI-driven code navigation tool accelerates new developer productivity, integrating them into projects from day one. Augoor reduces maintenance efforts and enhances code integrity by pinpointing problematic code segments, saving costs, and reinforcing your codebase. It automatically generates clear, updated code explanations, preserving knowledge, especially for complex legacy systems. The AI navigation system cuts down time spent searching through code, allowing developers to focus more on coding, speeding up feature development, and fostering innovation in large codebases. Augoor's advanced AI-driven visualizations uncover hidden patterns, map complex dependencies, and reveal critical relationships. -
29
CodePilot.ai
CodePilot.ai
Search multiple sources at once and find solutions to your coding problems. Code examples, issues, questions, docs – everything at your fingertips. Trying this new library? Looking for some projects that use it? Wondering how other projects implement the feature you’re working on? You can now filter GitHub results based on the libraries the project depends on. Similar API syntax is no longer an issue to worry when searching for code. Create developer profiles based on the projects you’re working on. Our ML-powered Ranker will analyze and rank the results based on relevancy for your current profile. Pick from a list of suggested custom sources curated for the technologies and tools from your developer profile. -
30
CodeMate AI
CodeMate
CodeMate is a developer tool that helps developers and development teams write, fix and maintain their codebase through natural language. You can achieve 10X productivity while programming as CodeMate makes searching, navigating and understanding complex codebases a breeze with its AI powered solution.
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