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Open Source Alternatives

List of open-source alternatives to everyday SaaS products.

btw-so/open-source-alternatives
Open GitHub
List stars
8,583
README repos
146
Indexed repos
145
List commits
59
Forks
362
Open issues
45

Tracked list growth

GitHub stars and default-branch commits for btw-so/open-source-alternatives.

Latest scan 2026-07-17 10:49

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7 repos matching these filters.

Topic: collaboration
Latest repo push 2026-07-17

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RocketChat/Rocket.Chat

The Secure CommsOS™ for mission-critical operations

AI dev
Stack
TypeScript Express React Vite Bun npm Yarn
GitHub topics
#chat #collaboration #foss #free #hacktoberfest #javascript
Updated
2026-07-07
Lists
4 list mentions
First commit
2015-05-19
License
NOASSERTION
Issues
3,846 open
Sign in to like RocketChat/Rocket.Chat
45,762
stars
Forks
13,717
Commits
29,789 commits
Star growth, last 7 days
No 7-day history
Commit velocity, last 7 days
No 7-day history
Website GitHub
mattermost/mattermost

Mattermost is an open source platform for secure collaboration across the entire software development lifecycle..

AI dev
Stack
TypeScript Cobra Express gRPC Go React Go modules npm
GitHub topics
#collaboration #golang #hacktoberfest #mattermost #monorepo #react
Updated
2026-07-07
Lists
6 list mentions
First commit
2015-06-15
License
NOASSERTION
Issues
921 open
Sign in to like mattermost/mattermost
38,342
stars
Forks
8,812
Commits
22,815 commits
Star growth, last 7 days
No 7-day history
Commit velocity, last 7 days
No 7-day history
Website GitHub
mattermost-community/focalboard

Focalboard is an open source, self-hosted alternative to Trello, Notion, and Asana.

Stack
TypeScript gRPC Go React .NET SDK Go modules npm
GitHub topics
#asana #collaboration #goal-tracking #golang #hacktoberfest #kanban-board
Updated
2026-05-18
Lists
6 list mentions
First commit
2020-10-08
License
NOASSERTION
Issues
783 open
Sign in to like mattermost-community/focalboard
26,274
stars
Forks
2,557
Commits
3,646 commits
Star growth, last 7 days
No 7-day history
Commit velocity, last 7 days
No 7-day history
Website GitHub
zulip/zulip

Zulip server and web application. Open-source team chat that helps teams stay productive and focused.

AI dev
Stack
Python Astro Django Scrapy Tornado npm pnpm uv
GitHub topics
#apache #chat #collaboration #electron #foss #free
Updated
2026-07-10
Lists
6 list mentions
First commit
2012-08-28
License
Apache-2.0
Issues
2,024 open
Sign in to like zulip/zulip
25,473
stars
Forks
9,940
Commits
71,211 commits
Star growth, last 7 days
0 0.0%
Commit velocity, last 7 days
0 0.0%
Website GitHub