Saber is a cross-platform notes app built for handwriting. Notes are encrypted and stored so the server cannot read them, and can be synced across phones, tablets, and computers. The highlighter renders underneath the text without overlapping itself, notes can be organized into nested folders, and dark mode darkens the notes as well as the interface. The software is free and open source.
MicroPad is an open-source, free non-linear note-taking app with an infinite canvas for organising notes and notebooks. It runs in a web browser and on Windows, macOS and Linux, and supports μSync for synchronising notes across devices. It can import Evernote enex files and Markdown files, and export notes to markdown-formatted plain text.
QOwnNotes is an open source markdown note-taking application for Linux, macOS and Windows that works together with Nextcloud Notes. Notes are stored as plain-text markdown files on the computer, and sync services such as Nextcloud can be used to sync notes across devices. It is described as a native application optimized for speed and low processor and memory use.
Gnumeric is an open-source spreadsheet program. The project states that it starts up quickly and handles large spreadsheets while remaining responsive. Its source code is available under the GNU General Public License version 2 or version 3. The site also lists release notes and resources such as a user's manual and mailing list.
Dangerzone is a free and open source project maintained by Freedom of the Press Foundation. It converts potentially dangerous PDFs, office documents, or images to a safe PDF. Documents are sanitized in a sandbox with no network access, and the document is converted into pixels and rebuilt as a PDF.
Playscii is an open-source ASCII art, animation, and game creation tool by JP LeBreton for Windows, macOS, and Linux. It requires an OpenGL 2.1-capable video card with GLSL 1.30 support and is offered as a free download. The developer notes that the macOS build is 32-bit and not notarized.
Super Productivity is a free, open-source, privacy-first task manager with built-in time tracking, timeboxing, and focus mode. It works offline with no account required and is available for Windows, macOS, Linux, Android, iOS, and web. Tasks stay on the device by default, with optional sync via Super Sync, WebDAV, or Dropbox, and integrations for GitHub, GitLab, and Jira. All features and platforms are free forever.
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MicroPad is an open-source, free non-linear note-taking app with an infinite canvas for organising notes and notebooks. It runs in a web browser and on Windows, macOS and Linux, and supports μSync for synchronising notes across devices. It can import Evernote enex files and Markdown files, and export notes to markdown-formatted plain text.
QOwnNotes is an open source markdown note-taking application for Linux, macOS and Windows that works together with Nextcloud Notes. Notes are stored as plain-text markdown files on the computer, and sync services such as Nextcloud can be used to sync notes across devices. It is described as a native application optimized for speed and low processor and memory use.
Gnumeric is an open-source spreadsheet program. The project states that it starts up quickly and handles large spreadsheets while remaining responsive. Its source code is available under the GNU General Public License version 2 or version 3. The site also lists release notes and resources such as a user's manual and mailing list.
Dangerzone is a free and open source project maintained by Freedom of the Press Foundation. It converts potentially dangerous PDFs, office documents, or images to a safe PDF. Documents are sanitized in a sandbox with no network access, and the document is converted into pixels and rebuilt as a PDF.
Playscii is an open-source ASCII art, animation, and game creation tool by JP LeBreton for Windows, macOS, and Linux. It requires an OpenGL 2.1-capable video card with GLSL 1.30 support and is offered as a free download. The developer notes that the macOS build is 32-bit and not notarized.
Super Productivity is a free, open-source, privacy-first task manager with built-in time tracking, timeboxing, and focus mode. It works offline with no account required and is available for Windows, macOS, Linux, Android, iOS, and web. Tasks stay on the device by default, with optional sync via Super Sync, WebDAV, or Dropbox, and integrations for GitHub, GitLab, and Jira. All features and platforms are free forever.
