Kosei Taki is an independent developer and former IT consultant with over 10 years of experience in enterprise systems and digital strategy.
After working in consulting, he transitioned into freelance work, focusing on building and managing projects as a solo operator. Through this shift, he experienced a gap between how software is presented and how it is actually used by individuals:
- pricing that scales unexpectedly
- features designed for teams rather than solo users
- "free plans" that become restrictive in real workflows
SoloStack was created to bridge that gap.
Instead of reviewing tools from a corporate or team perspective, Kosei evaluates them based on how they perform in real solo use — balancing cost, flexibility, and long-term usability. His approach combines:
- hands-on testing
- analysis of pricing structures and limitations
- practical decision-making from a freelancer's perspective
Not every tool is used long-term, but each review focuses on the points that matter most when choosing software independently.
Day to day, SoloStack is written around client work rather than instead of it — most weeks it's client projects first and writing in whatever's left over, which is also exactly the kind of scheduling tension the site's own reviews are written for. Before going independent, Kosei's consulting work centered on project management for large-scale enterprise system rollouts, which is part of where the pricing-structure-first habit in these reviews comes from: a rollout budget punishes the same kind of hidden per-seat and renewal-tier surprises that trip up a solo freelancer's software stack, just at a different scale.
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More on how the site works
For the specific criteria used in each comparison and where the underlying information comes from, see the Methodology page. For how this site is funded, see About SoloStack.