Clockify is a free time tracking platform launched in 2017 by a Serbian team, with core timers, timesheets, and reports completely free and unlimited by users; it surpassed 5 million users by 2026 and is one of the most widely used time management tools globally.
Uptime Kuma is a free, open-source, self-hosted uptime monitoring tool released in 2021 with Docker one-click deployment. Supports 20+ monitor types (HTTP, Ping, Port, SSL), a beautiful status page, and 90+ notification channels.
My Hours is a time tracking platform for SMBs and freelancers with a free plan for up to 5 active users, over 250,000 global users and 1.6 billion logged hours, and a Pro plan at about $8 per user per month billed annually.
Trilium Notes was created in 2018 by Czech developer Adam P., an AGPLv3 open-source, self-hosted hierarchical note app. Unlimited hierarchical trees, relation maps, script extensions, and end-to-end encrypted sync suit personal knowledge management users with high privacy requirements.
Foam is a free, open-source personal knowledge management tool built on VS Code, using local Markdown files and bidirectional links to build a knowledge graph, completely free under the MIT license, suited to technical users familiar with VS Code and Git.
TinyLetter is a completely free minimalist email newsletter service under Mailchimp, suitable for individual creators sending plain-text newsletters, with Mailchimp powering the sending infrastructure.
Mautic is an open-source marketing automation platform launched in 2013, GPL-licensed and self-hostable, serving 200,000+ users with email marketing, lead scoring, and customer journeys.
YunoHost is a free and open-source self-hosting platform from France, built on Debian, offering one-click deployment of 400+ apps and built-in mail services from a single server with 2GB of RAM or more.
BlueOnyx is an Italian open-source server management panel that is free with no license fees, running on AlmaLinux/RHEL with built-in email, DNS, virtual hosting, and API.
FreeCamp is a 100% free, open source and self-hosted online customer service chat platform, providing live chat and basic ticketing via a website plugin. Ideal for budget-limited startups seeking private deployment.
Jitsi is an open-source video conferencing project that began as SIP software in 2003 and is now maintained by 8x8, offering the free no-registration meet.jit.si service and fully self-hosted deployment, built on WebRTC with an end-to-end encryption option for privacy- and sovereignty-minded teams.
Tally is a minimalist online form builder and automation tool headquartered in the United States, known for unlimited free submissions and a clean, easy editor, ideal for individuals and SMBs to create forms quickly.
Microsoft To Do is a free task management app launched by Microsoft in 2017, deeply integrated with Microsoft 365 and Outlook, available across 5 platforms at no cost — the handiest to-do tool for Microsoft ecosystem users.
OpenCart is a lightweight open-source e-commerce system developed by a UK-based team, known for being completely free, easy to install, and requiring minimal server resources.
ZPanel is a UK-origin open-source virtual hosting control panel that once delivered integrated hosting management on Windows and Linux, but the project is now discontinued and suitable only for study and legacy environments.