Skip to content

Home AI tools NEW Alternatives Deals Guides

Top 100 AI GitHub activity AI categories AI Compare Saved AI tools Learn about AI Categories Collections Newly added Underrated this week Technology stacks Tags Licenses Compare tools About AltStack Advertise

.nav-explore{display:none}

Explore

Top 100 AI GitHub activity AI categories AI Compare Saved AI tools Learn about AI Categories Collections Newly added Underrated this week Technology stacks Tags Licenses Compare tools About AltStack Advertise

Loading this page…

Find free alternatives to paid software.
Created by Sushil Kumar Sah.

Browse

Tools AI tools Alternatives Top 100 AI GitHub activity AI categories Learn about AI Categories Tech stacks Tags Licenses Deals & trials

Collections

Newly added Underrated this week Trending Self-hosted AI tools Coming soon

Resources

Blog & guides AI resources About AltStack Submit a tool Advertise Become a sponsor

Your toolkit

Saved open software Saved AI tools Compare open software Compare AI tools Download catalog Contact Privacy

© 2026 Sushil Kumar Sah. All rights reserved.Compare free and paid software.

Popular alternativesChatGPT Claude Claude Code Cursor GitHub Copilot Notion Figma Canva Photoshop Slack Airtable Zapier Google Analytics Vercel Firebase Dropbox

DirectoryElement

Team Chat & Messaging Tools

Element

Secure, decentralized messaging for teams and individuals.

Pricing not verified

We have not checked this tool’s current pricing. Visit its official website before choosing a plan.

Visit website Source repository

14kRepository stars

2.8kForks

AGPL-3.0License

2d agoLast commit

Element product interface — Element · official product interface

About Element

Secure, decentralized messaging for teams and individuals. A self-hosting option is recorded for this project. Review the official deployment instructions and maintenance requirements before running it yourself.

Explore the project

Team Chat & Messaging Tools Encrypted Communication Tools

Technology stack

Technologies recorded in the catalog snapshot.

Github Actions JavaScript NodeJS CSS Bash Docker Typescript Eslint JSX Prettier React Python Vite Testing Library Jest Playwright Sentry PostHog Express Babel Yarn Webpack Storybook Renovate Stylelint Perl

Tags

hacktoberfest matrix

Alternative to

Microsoft Teams

Project details

License AGPL-3.0

Hosting Self-hosting available

Status Listed

Data checked 11 Oct 2026

Know a better alternative?

Help Sushil make the directory more useful.

Submit a project Report a correction

Related projects

Rocket.Chat product interface

Rocket.Chat

Team Chat & Messaging Tools

Pricing not verified

Self-hosted team messaging with voice, video, and AI.

We have not checked this tool’s current pricing. Visit its official website before choosing a plan.

46kstars+ 14430 daysMIT

USE INSTEAD OF

Microsoft Teams

Mattermost product interface

Mattermost

Team Chat & Messaging Tools

Pricing not verified

Secure collaboration platform for mission-critical work.

We have not checked this tool’s current pricing. Visit its official website before choosing a plan.

39kstars+ 27530 daysUnknown

USE INSTEAD OF

Microsoft Teams

Buzz product interface

Buzz

Team Chat & Messaging Tools

Pricing not verified

Team chat, project management, and AI agents in one place.

We have not checked this tool’s current pricing. Visit its official website before choosing a plan.

36kstars+ 3.3k30 daysApache-2.0

USE INSTEAD OF

Microsoft Teams

SignalProduct logo · See the interface on the official website

Signal

Encrypted Communication Tools

Pricing not verified

Private messaging with end-to-end encryption.

We have not checked this tool’s current pricing. Visit its official website before choosing a plan.

29kstars+ 13030 daysAGPL-3.0

USE INSTEAD OF

Zulip product interface

Zulip

Team Chat & Messaging Tools

Pricing not verified

Organized team chat for distributed teams.

We have not checked this tool’s current pricing. Visit its official website before choosing a plan.

26kstars+ 14930 daysApache-2.0

USE INSTEAD OF

Microsoft Teams

Fluxer product interface

Fluxer

Team Chat & Messaging Tools

Pricing not verified

Open source messaging with privacy and community focus.

We have not checked this tool’s current pricing. Visit its official website before choosing a plan.

11kstars+ 29930 daysAGPL-3.0

USE INSTEAD OF