Best open source tools

Move between a live timer, a drag-and-drop calendar and a weekly timesheet.

An open-source note app for linked ideas, personal knowledge graphs, and self-hosted knowledge bases.

A self-hosted browser notebook that keeps Markdown notes, links, comments, and history together.

A composable pipeline for collecting, transforming, and routing logs and metrics.

An open-source desktop notebook for stylus handwriting, PDF markup, layers, and audio notes.

Organize team and personal projects with Kanban cards inside a Nextcloud environment.

Shared expenses with recurring costs and separate currency balances

Custom-period budgets, spending goals and optional Google Drive sync

Open-source shared expense groups without a required account

A self-hosted note library with Markdown, boards, daily notes, and shared workspaces.

Organize work and personal life with tasks, projects, areas, recurring workflows, and a day planner.

Android account records with recurring plans and statement reconciliation

Keep task cards as Markdown files in a self-hosted Kanban board.

Create and sync tasks through a self-hosted Nextcloud account with CalDAV-compatible clients.

An open-source handwriting notebook with nested folders and encrypted cross-device sync.

A GNOME desktop activity timer for individuals who want a record of chosen daily work activities.

An open-source team messenger with channels, direct messages, threads, and Frappe integrations.

Record a selected macOS screen area and export a concise demonstration.

Coordinate project tasks, Kanban plans, timesheets, budgets, and customer progress in ERPNext.

Multiple crypto wallets with recovery and Android sync controls

A free, open-source notebook for organizing notes in the browser or on desktop.

Local command-line crypto tax calculations for UK reporting workflows

Run a lightweight self-hosted Kanban board with task automation and WIP limits.

Bitcoin fee estimates and pending transactions drawn as projected blocks