In this story, I will discuss the open-source alternatives for the most popular productivity tools such as Microsoft Office, Microsoft Teams, Slack, Notion, Acrobat, Trello, Photoshop, and more. These alternatives provide similar functionality and benefits as paid ones.

I have picked the best app from each category as per my experience with them, you can suggest more apps like this.

Let’s see some of them —

Thunderbird

Thunderbird is an all-in-one open-source suite for email, calendar, contacts, tasks, RSS feeds, and chats.

https://www.thunderbird.net/en-US/

You can download it for free and start using it.

Logseq

Logseq is an open-source alternative to Obsidian, offering bi-directional note linking, markdown support, plugins, and a visual knowledge graph.

https://logseq.com/

You can download it for free and start using it.

AppFlowy

AppFlowy and Anytype are open-source alternatives to Notion, allowing users to create notes, to-do lists, tables, boards, and more.

https://www.appflowy.io/

You can download it for free and start using it.

Mattermost

Mattermost is an open-source alternative to Slack and Microsoft Teams, offering channels, chat, file sharing, screen sharing, and audio calls.

https://mattermost.com/

Focalboard

Focalboard is an open-source alternative to Trello, providing boards, lists, calendars, and galleries for project organization and collaboration.

https://www.focalboard.com/

You can download it for free and start using it.

VS Codium

VS Codium is an open-source alternative to Visual Studio Code, offering the same interface, features, and compatibility with plugins and extensions

https://vscodium.com/

You can download it for free and start using it.

Thank you for taking the time to read this article! If you found it helpful, a clap 👏 would be greatly appreciated — it motivates me to continue writing more. If you want to learn more about open-source and full-stack development, follow me on Twitter (X) and Medium.