AppFlowy brings notes, wikis, projects and team work together in one workspace that you can run yourself, so your data stays under your own control. It covers everyday planning and documentation in a single place, which helps small teams avoid juggling several separate apps. Visit official site Label: Open-source Platform: Windows, macOS, Linux, iOS, Android […]
Open-source 7-Zip is a file archiver with a high compression ratio for packing and unpacking files. It handles many archive formats, offers strong AES-256 encryption for 7z and ZIP files, and adds itself to the Windows right-click menu for quick use. Visit official site Platform: Windows. Best for: Compressing, extracting and encrypting archive files. Replaces: […]
Open-source Thunderbird is a free email app for managing your mail, contacts, and calendars in one place. It supports many accounts and add-ons, and it keeps your data on your own computer. Visit official site Platform: Windows, macOS, and Linux. Best for: Managing email, contacts, and calendars. Replaces: Microsoft Outlook. Verified: October 2026
Open-source KeePassXC is a password manager that stores your passwords safely in an encrypted file on your own device. It can create strong passwords and fill them in for you, without a cloud account. Visit official site Platform: Windows, macOS, and Linux. Best for: Offline password management. Replaces: 1Password and LastPass. Verified: October 2026
Open-source Syncthing keeps your files in sync between your computers and phones, without using a central cloud service. Your files move directly between your own devices, so they stay private. Visit official site Platform: Windows, macOS, Linux, Android, and iOS. Best for: Private file syncing across devices. Replaces: Dropbox and Google Drive. Verified: October 2026
Open-source Excalidraw is a virtual whiteboard for sketching diagrams, wireframes, and ideas by hand. It is easy to share and collaborate in real time, right from your browser. Visit official site Platform: Web. Best for: Diagrams, sketches, and brainstorming. Replaces: Miro and Lucidchart. Verified: October 2026
Open-source Stirling-PDF is a web-based tool for working with PDF files, from merging and splitting to compressing and converting them. You can run it on your own server, so your documents stay private. Visit official site Platform: Web, self-hosted. Best for: PDF merging, splitting, and converting. Replaces: Adobe Acrobat online tools and iLovePDF. Verified: October […]
Open-source Joplin is a note-taking app that keeps your notes organized and synced across devices. You can write in Markdown, add to-do lists, and keep your data under your own control. Visit official site Platform: Windows, macOS, Linux, Android, and iOS. Best for: Private note-taking and to-do lists. Replaces: Evernote and Notion. Verified: October 2026 […]
Open-source LibreOffice is a full office suite with tools for writing, spreadsheets, and presentations. It opens common document formats and is a strong free choice for everyday office work. Visit official site Platform: Windows, macOS, and Linux. Best for: Documents, spreadsheets, and presentations. Replaces: Microsoft Office. Verified: October 2026