Find the best open source alternative
We curate open source tools that replace paid software. We manually review every listing for quality, active maintenance, and self-hosting support.
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Keploy
An AI-powered open-source testing tool that generates test cases and mocks for unit, integration, and API testing, increasing test coverage.
Oso Cloud
Oso Cloud is an open source authorization library and service for adding RBAC, ABAC, and relationship-based access control to any application. A developer-first alternative to Permit.io; Apache-2.0 licensed.
Quiet
It is a peer-to-peer, serverless messaging application prioritizing privacy and security through Tor integration and end-to-end encryption.
Manticore Search
Manticore Search is an open source full-text search engine compatible with MySQL protocol, offering fast document search, faceted filtering, and real-time indexing. A self-hosted alternative to Elasticsearch; GPL-2.0 licensed.
MuPDF
A fast and powerful library for managing PDF and other document formats, offering tools to extract, convert, render, and edit documents.
Qdrant
Qdrant is a self-hosted vector database and similarity search engine written in Rust, optimized for AI applications and semantic search. Apache 2.0 licensed.
PDF4QT
An open-source PDF editor for Windows/Linux, offering a C++ library, command-line tool, and applications for viewing/editing PDFs.
Keestash
Keestash is an open source, self-hosted password manager for individuals and teams with a web interface for shared credential management and team access control. GPL-3.0 licensed.
Passwordcockpit
A self-hosted, open-source password manager for teams, offering secure storage, sharing, and retrieval of credentials.
sK1 Project
sK1 is an open source professional vector graphics editor for Linux focused on prepress and print production workflows, with CMYK color support and ICC profile management. LGPL-3.0 licensed.
RawTherapee
RawTherapee is an open source RAW photo editor with non-destructive processing, advanced color science tools, and support for 800+ camera models. A self-hostable alternative to Adobe Lightroom; GPL-3.0 licensed.
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