The best open source alternative to Harvest is Super Productivity. If that doesn't suit you, we've compiled a ranked list of other open source Harvest alternatives to help you find a suitable replacement. Other interesting open source alternatives to Harvest are: Midday, SolidTime, Kimai, and Wakapi.
Harvest alternatives are mainly Time Tracking Tools but may also be Freelancer Tools or Task Management Tools. Browse these if you want a narrower list of alternatives or looking for a specific functionality of Harvest.
Combines task management, time tracking, Pomodoro focus sessions, and GitHub/Jira integration in a local-first app for Windows, macOS, Linux, Android, and iOS.

Super Productivity is a task management app built around the idea that your tools shouldn't interrupt you. Everything runs locally by default. No accounts, no telemetry, no subscription. Your data stays on your device unless you actively choose to sync it via WebDAV or Dropbox.
It's aimed at developers, freelancers, and anyone who does focused, heads-down work and wants a single place to manage tasks, track time, and review progress without switching between five different tools.
Core task management covers quick-add, subtasks, notes, due dates, repeating tasks with granular schedules, and automatic rollovers for anything you didn't finish.
Board layouts are flexible. Flip between Kanban, Eisenhower matrix, compact list, or a custom view. Projects, tags, and folders let you organize work the way you actually think about it.
Focus and time tracking are built in. One-click timers with keyboard shortcuts, Pomodoro sessions with configurable breaks, and a distraction-free focus mode that hides everything except the task at hand.
Integrations pull work in from outside. GitHub, GitLab, and Jira issues import directly into your boards. Calendar sync via CalDAV gives you a full picture of your day alongside your tasks.
A few things that stand out compared to other workspace organizers:
The app runs on Windows, macOS, Linux, Android, and iOS. It's free, built in the open, and has an active contributor community.
Looking for open source alternatives to other popular services? Check out other posts in the alternatives series and openalternative.co, a directory of open source software with filters for tags and alternatives for easy browsing and discovery.
All-in-one tool for freelancers and small businesses to manage finances, track time, store files, and send invoices efficiently.

Midday is your comprehensive solution for simplifying business management. This powerful platform combines essential tools to help freelancers, contractors, consultants, and micro-businesses thrive:
With Midday, you can put the tedious aspects of running a business on autopilot, allowing you to focus on what truly matters – growing your venture and serving your clients.
Seamlessly track time across multiple projects, generate insightful reports, and optimize your open source contributions.

SolidTime is a powerful time tracking solution designed specifically for open source developers and contributors. It offers a seamless way to manage your time across multiple projects, providing valuable insights into your productivity and helping you optimize your workflow.
Key features and benefits of SolidTime include:
By using SolidTime, open source contributors can better manage their time, showcase their efforts to the community, and maintain a healthy work-life balance while pursuing their passion for open source development.
Open-source time tracking solution for businesses of all sizes. Manage projects, track billable hours, and generate insightful reports.

Kimai is a powerful, flexible, and user-friendly time tracking software designed to help businesses and freelancers manage their time effectively. This open-source solution offers a comprehensive set of features to streamline your workflow and boost productivity.
Key benefits of Kimai include:
Whether you're a small startup, a growing agency, or a large enterprise, Kimai adapts to your needs. Its scalable architecture ensures that you can track time efficiently, manage resources effectively, and make data-driven decisions to drive your business forward.
Open-source, self-hosted time tracking solution for developers. Analyze coding habits, improve productivity, and visualize progress.

Wakapi is a powerful, open-source time tracking tool designed specifically for developers who want to gain insights into their coding habits and boost productivity. With its seamless integration and user-friendly interface, Wakapi offers a comprehensive solution for monitoring your programming activities.
Key benefits of Wakapi include:
Whether you're a solo developer looking to optimize your time or a team leader aiming to enhance project management, Wakapi provides the tools and insights needed to elevate your coding productivity to new heights.
Ever Teams offers an all-in-one solution for work management, time tracking, and team collaboration with integrations for popular tools.

Ever Teams is a comprehensive open-source work and project management platform designed to boost productivity and streamline team collaboration. With its real-time clarity feature, teams can stay on top of their projects and tasks effortlessly.
Key benefits include:
Ever Teams empowers teams to work more efficiently by providing a unified workspace for all project-related activities. Its open-source nature allows for customization and transparency, making it an ideal choice for businesses seeking a flexible and powerful project management solution.