Best Open Source Frameworks 2026

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Browse free open source Frameworks and projects below. Use the toggles on the left to filter open source Frameworks by OS, license, language, programming language, and project status.

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The database for AI-powered applications.

MongoDB Atlas is the developer-friendly database used to build, scale, and run gen AI and LLM-powered apps—without needing a separate vector database. Atlas offers built-in vector search, global availability across 115+ regions, and flexible document modeling. Start building AI apps faster, all in one place.

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Yeastar: Business Phone System and Unified Communications
Go beyond just a PBX with all communications integrated as one.

User-friendly, optimized, and scalable, the Yeastar P-Series Phone System redefines business connectivity by bringing together calling, meetings, omnichannel messaging, and integrations in one simple platform—removing the limitations of distance, platforms, and systems.

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1

Capstone

Capstone disassembly/disassembler framework

Capstone is a disassembly framework with the target of becoming the ultimate disasm engine for binary analysis and reversing in the security community. Created by Nguyen Anh Quynh, then developed and maintained by a small community, Capstone offers some unparalleled features. Support multiple hardware architectures: ARM, ARM64 (ARMv8), Ethereum VM, M68K, Mips, MOS65XX, PPC, Sparc, SystemZ, TMS320C64X, M680X, XCore and X86 (including X86_64). Having clean/simple/lightweight/intuitive architecture-neutral API. Provide details on disassembled instruction (called “decomposer” by others). Provide semantics of the disassembled instruction, such as list of implicit registers read & written. Implemented in pure C language, with lightweight bindings for D, Clojure, F#, Common Lisp, Visual Basic, PHP, PowerShell, Emacs, Haskell, Perl, Python, Ruby, C#, NodeJS, Java, GO, C++, OCaml, Lua, Rust, Delphi, Free Pascal & Vala (ready either in main code, or provided externally by the community).

Downloads: 8 This Week

Last Update: 5 days ago
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2

Saksham: Multi-Core Processor Simulator

x86 Multi-Core Microprocessor and assembler simulator written in C++

Saksham: Customizable x86 Based Multi-Core Microprocessor Simulator. A C++ Project aimed at creating a platform for simulating basic features (Register and Instruction Set) of a x86 Based Multi Core Microprocessor and assembler family. This project is implementation of the concept presented in the paper: https://ieeexplore.ieee.org/document/5231896 Documentation: https://sourceforge.net/p/saksham/wiki/Home/

Downloads: 4 This Week

Last Update: 2020-10-24
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3

Michel Max Spreadsheet Serialization

Serializes and Deserializes objects into spreadsheets

EN-US: Serializes and Deserializes objects into and from "Microsoft Excel XML" saved as ".xls". PT-BR: Serializa objetos em "Microsoft Excel XML" salvo como ".xls", e Deserializa "Microsoft Excel XML" salvo como ".xls" para objetos.

Downloads: 1 This Week

Last Update: 2017-04-05
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4

Genome SDK

The Genome is a program component framework

Downloads: 0 This Week

Last Update: 2016-03-10
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AI-based, Comprehensive Service Management for Businesses and IT Providers
Modular solutions for change management, asset management and more

ChangeGear provides IT staff with the functions required to manage everything from ticketing to incident, change and asset management and more. ChangeGear includes a virtual agent, self-service portals and AI-based features to support analyst and end user productivity.

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