Open Source

Time Log

A time log is a systematic record that documents the duration spent on various tasks and activities within a specific timeframe, serving as a tool for tracking and analyzing time usage. ✨

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Vendor lock-in can cost a lot, not just in cash but also in hours. With Kimai, you can host it yourself, have me host it for you, or fork it and change it. You're never locked into a hosted product, and all of your data is easy to export so that if you ever decide Kimai isn't for you anymore, your data is still yours (the same applies to the paid plans, I offer data export upon cancellation).

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With closed source software, you have only the vendor's claims that they're keeping the software secure and adhering to standards. The visibility of the code behind open source software means you can see for yourself. You can always see my responses to the community, the release schedule and milestones, and every commit and pull request review.

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Ever tried to reconstruct what you did last Tuesday? Most people can barely remember what they had for lunch. And yet, countless professionals attempt this exact feat every Friday afternoon when the time log is due. The result: rounded numbers, educated guesses, and a nagging feeling that something doesn’t add up.

A time log should build itself while you work — not require an act of creative writing at the end of the week. That’s exactly what Kimai does.

What a time log is for (and what it isn’t)

A time log is a record of how working hours were spent. It’s not a surveillance tool, and it’s not designed to squeeze every last minute of productivity out of people. At its best, a time log provides clarity: where did the time go, which projects absorbed the most effort, and are there patterns worth paying attention to?

Consultants and service providers use time logs to justify their invoices. A client who receives a detailed breakdown of hours — with dates, tasks, and durations — is far more likely to pay without questions than one who gets a single line item saying “consulting: 40 hours.”

Project managers use time logs to compare planned effort against actual effort. If a task was estimated at 10 hours but consistently takes 25, that’s not a team performance problem — it’s an estimation problem. The time log makes it visible.

Employees in regulated industries keep time logs because they have to. Healthcare, government contracting, and legal work all require documented proof of how hours were spent. An accurate time log isn’t optional — it’s a compliance requirement.

How Kimai keeps your time log accurate

The key to a useful time log is capturing data at the source. That means logging time while you work, not from memory days later. Kimai makes this frictionless: click start when you begin a task, click stop when you’re done. The entry is recorded with timestamps, project assignment, and activity type.

For people who prefer to log time after the fact, Kimai offers manual entry and a weekly calendar view where you can fill in blocks of time. Both approaches produce the same structured time log — the difference is whether the clock runs live or you fill in the details later.

Every entry in your time log can carry additional context: a description of what you worked on, custom fields for cost centers or billing codes, and tags for filtering. This turns a bare list of hours into a rich, searchable record.

From raw hours to useful insight

A time log becomes valuable when you look at it in aggregate. Kimai’s reporting tools let you slice your time data by customer, project, team member, activity, or time period. Export the results as PDF, Excel, or CSV — whatever your accounting department, client, or project sponsor prefers.

Common questions that a well-kept time log can answer: How profitable is this client? Is the support team spending more time on product A or product B? Did we underestimate development effort on the last three projects? The data is already there — Kimai helps you ask the right questions.

Why open source is the right choice for time logs

Time logs contain detailed information about work patterns, productivity, and resource allocation. That’s data you want to control. With Kimai’s open-source codebase, you can run the software on your own servers, audit the code for security and privacy, and customize it to match your organization’s needs.

Self-hosting means your time log data never leaves your infrastructure. For organizations with strict data residency requirements or those who prefer not to depend on third-party cloud services, this is a decisive advantage.

If managing servers isn’t your thing, the Kimai Cloud provides a hosted option on European servers — with the same open-source code and the ability to export your data and move to self-hosting at any time.

Start logging time, not excuses

Kimai is free to self-host, quick to set up in the cloud, and designed to make time logging a habit rather than a hassle. Try it and see how much easier your week-end reporting becomes when the data is already there.

Which Kimai is right for you?

On-Premise

I take care of the software, you take care about the hosting, updates and security. And if you don't want to do it yourself, there is always support available at your fingertips. You buy the plugins relevant to you in an annual update subscription.

Cloud

Get up and running in seconds, leave the hosting and update to me, you take care of your core business. Make sure your team is ready for the future, with a modern time tracking solution. All plugins are available in the cloud at no extra cost.

Cloud or self-hosted.
You decide.

Self hosting Kimai Cloud
Invoicing
Export data
Email Support With additional costs
Community Forum
Working hours, vacation, sickness, public holidays 299 € per year
Audit trail logs 49 € per year
Custom fields 99 € per year
Expense management 99 € per year
Task planning 79 € per year
Translations 29 € per year
Kiosk mode with support for Barcode, RFID, Web NFC 199 € per year
Customer Portal Plugins
Custom Domain with SSL
Automatic Backups
Access restriction via IP
Automatic Updates
Server Maintenance
Prioritized Feature Requests

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