Free, self-hosted alternatives to the SaaS you already pay for
A curated directory of open source tools you can run yourself. Get the best new picks weekly, or jump straight into the directory.
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136+ open source SaaS alternatives, curated and updated regularly.
Keploy
Open-source tool that records real API traffic and replays it as tests with auto-generated mocks for databases and external services.
OpenPost
OpenPost helps solo founders prepare, adapt, review, schedule and track social posts. Hosted and self-hosted options.
MailCheap
MailCheap is an open-source newsletter app for writing, sending, and publishing email campaigns, from the dashboard or an AI agent via its built-in MCP server. Self-host it with your own Amazon SES or PostShiba account, or use MailCheap Cloud, which runs the same code. It imports lists from Beehiiv, Substack, and Mailchimp, gives every newsletter its own website, and bakes in deliverability protections like warm-up sending, list cleanup, and Gmail spam-rate monitoring.
Nuclei
Fast, customizable vulnerability scanner powered by YAML templates
Onyx
Open-source AI platform for enterprise search across company data
Navidrome
Self-hosted music streaming server for your personal library
Cap
Open-source screen recorder with instant sharing and a built-in editor
Super Productivity
Task manager with time tracking, timeboxing, and focus mode
Bagisto
Open-source Laravel eCommerce and multi-vendor marketplace platform
Krayin
Self-hosted CRM built with Laravel for sales and lead management
ToolJet
Low-code platform for building internal tools and business apps
Memos
Self-hosted personal timeline for quick notes and snippets
Logseq
Privacy-first knowledge management platform with linked notes
KeePassXC
Cross-platform, secure password manager with a local encrypted database
Pulumi
Infrastructure as code in general-purpose programming languages
Airbyte
Open-source data movement platform for ELT pipelines
DBeaver
Free universal database tool and SQL client for every major database
InfluxDB
Purpose-built time series database for metrics, events, and real-time analytics
SearXNG
Privacy-first metasearch engine that aggregates results with no tracking
Weblate
Web-based continuous localization platform with Git integration
Dragonfly
Modern, multi-threaded in-memory data store compatible with Redis
Bruno
Fast, offline-first, open-source API client and testing tool
Element
Secure, decentralized messaging client built on the Matrix protocol
Temporal
Durable execution platform for building reliable distributed applications
Zed
High-performance, multiplayer code editor built for speed and AI
Mastodon
Self-hosted, federated microblogging social network
Jellyfin
Self-hosted media server for movies, music, and TV shows
Ollama
Run large language models locally on your own machine
Qdrant
High-performance vector database and search engine for AI applications
ClickHouse
Column-oriented database for real-time analytics on massive datasets