I built a project manager for solopreneurs and individuals because every other tool is built for teams

Arthur Knegtel — Mon, 13 Apr 2026 18:39:57 +0000

Hi, I'm Arthur, I've been building side projects for years, and for years I've been fighting my own project management tooling.

Not because I couldn't find something good enough, but because every tool I tried was designed for someone else.

Linear is beautiful, but it's a team tool. Jira is an enterprise product pretending to be a task manager. Notion is infinitely flexible, which means it's also infinitely distracting.

The cognitive overhead of managing the tool itself started competing with actually doing the work. I was spending time maintaining a system instead of shipping.

So I built Kubes.

The idea: strip everything that isn't for you

Kubes is built around one sentence: dead simple project management for solopreneurs and individuals.

The core model is deliberately minimal:

Kubes: top-level containers, one per project (personal or work) or client.
Collections: groups within a Kube (milestones, phases, whatever you need them to be)
Actions: tasks, the atomic unit of work.
Subtasks: subdivisions of actions, for when you need to organize even more.

That's the core data model. No sprints, no roadmaps, no comment threads, no breakdown charts. Just the structure and view you actually need to stay in control of multiple projects at once.

Kubes provides the simplicity of a simple task manager, but gives it more structure and opinionated views. And that's a selling point:

The interface doesn't get in your way.

The main view is a vertical accordion where all your active Kubes and their open actions are visible at once. Completed work from today stays visible at the bottom, de-emphasized. Completed work from previous days hides by default. Benefit is you get a clear picture of what needs doing without drowning in history.

Controls are hidden until you need them. Drag handle appear in reorder mode, add buttons appear in add mode, and so on. There's even a focus mode to hone in to your in-progress tasks.

One of the core ideas of Kubes is speed.

Because of this idea: Everything edits inline. No modals to open, just rename something. There's shortcuts for power users too. Properties like due dates, priority, and tags are set via inline syntax. Type !tomorrow, !!1, or #tagname directly in the task title. No form fields, no drawers.

Built for programmability from day one

Because the world and the way we use software is changing, and fast at that... Every action available in the UI has a corresponding REST API endpoint. Every one. This isn't an afterthought.

The API is designed to be consumed cleanly by LLM tool calls: flat predictable JSON, simple string enums, integer positions with bulk update support. You can wire up any AI agent or script to manage your tasks without fighting the API design. Authentication is via Personal Access Tokens. No OAuth dance needed.

Free, with AI features on Pro

The full core app is free: Kubes, Collections, Actions, Subtasks, drag-and-drop reordering, inline properties, the API, PATs, shortcuts, etc. Almost everything.

But because a man has got to eat too, there is an extra layer of helpfulness that can be acquired with Pro (9€/month or 79€/year) which, for now, adds Kumo (an AI assistant built into the app for those of you who like convenience).

Kumo provides Brain Dump mode, project scaffolding, deadline assignment, and daily helpful insights into your projects. No API key is required on Pro, AI usage is included. But if you want a different model, you can BYOK.

If you're a solo entrepreneur or individual managing more than one project and you're tired of tools that weren't built for you, give it a try at kubes.work. It can't hurt to try it.

Kubes is built with speed, simplicity and usefulness in mind. It will always be.

It's early in the journey still, lots of changes incoming and feedback is very welcome. You can hit me up at arthur@konam.dev

If you've made it this far, thank you for reading!

Forem: Arthur Knegtel

I built a project manager for solopreneurs and individuals because every other tool is built for teams