Notion is the most versatile project management tool for solo developers because it combines task tracking, documentation, note-taking, and client communication in a single workspace that works the way you think rather than forcing a specific workflow methodology. You can create a Kanban board for your current sprint, a table of client projects with status tracking, a documentation wiki for your code decisions, and a client-facing page showing project progress — all in the same Notion workspace, all accessible from one login.

The free plan is genuinely useful: unlimited blocks (pages, databases, tasks), unlimited file uploads up to 5MB each, and the ability to share pages with up to 10 guests (ideal for client project updates). The paid Plus plan at $10/month per user removes the guest limit and increases file upload size, which matters for sharing screenshots and documents with clients. Notion AI (available as an add-on for $8/month) integrates AI assistance directly into your documents and databases — useful for summarising meeting notes, generating task descriptions, and drafting client updates.

The specific setup that works well for solo PHP developers: one Notion workspace with a Projects database (each client project is a record), a Tasks database (tasks linked to projects), a Code Decisions log (where you document architectural choices that future-you will thank present-you for), and a Client Updates section (shared pages that give clients visibility into progress without requiring them to navigate the full workspace). This setup takes approximately 2 hours to configure and saves 1 to 2 hours per week in scattered note-taking and email searching.

Trello is the simplest Kanban board available and remains highly effective for solo developers who want visual task management without configuration overhead. Create a board, add lists (Backlog, In Progress, Review, Done), add cards for tasks, and drag them across columns as work progresses. The free tier includes unlimited personal boards, cards, and lists with no functional limitations for a solo developer. The entire setup for a new project takes under 5 minutes.

Trello’s strength is its immediate visual clarity. At a glance, you can see what is in progress, what is waiting for review, and what is done. For solo developers managing a mix of client requests and personal project features, the board view provides the kind of situational awareness that a to-do list does not. Power-Ups (integrations) extend Trello with GitHub commit linking, time tracking, calendar views, and Google Drive attachment support. The free tier allows one Power-Up per board.

The limitation: Trello does not handle documentation well. There is no built-in place for code decisions, project notes, or client communication history. Most experienced Trello users pair it with Notion (for documentation) or a simple Google Doc per project. If you want a single tool for both task tracking and documentation, Notion is more appropriate. If you want the simplest possible task board and do not mind having documentation elsewhere, Trello is unbeatable.

Linear is built by and for developers who find Jira bloated and Trello too simple. The application is exceptionally fast (keyboard-first navigation, instant search, no loading spinners), opinionated about workflow (issues, cycles for sprints, projects for epics), and deeply integrated with GitHub (commits and pull requests automatically update issue status). The free plan includes up to 250 issues, making it sufficient for a solo developer’s active backlog.

The keyboard shortcut system is the feature that developers love most: C creates an issue, T changes the status, P sets priority, all without mouse interaction. For a developer who spends the day switching between a code editor and a project board, the ability to create, update, and close issues in seconds rather than minutes adds up to meaningful time savings over the course of a project. The GitHub integration means that when you close a pull request with “Fixes LIN-123” in the commit message, Linear automatically marks the issue as Done — no manual status updates required.

Linear is less suited to client-facing project management because it is not designed for non-technical stakeholders to view project status. Clients cannot easily read a Linear workspace the way they can read a Notion page. For solo developers building their own products (SaaS, open source tools, personal projects), Linear is the best issue tracking option. For freelancers managing client communication alongside development tasks, pair Linear with a client-facing Notion page.

GitHub Projects (the updated Projects v2 experience, not the legacy Projects) provides Kanban board, table, and roadmap views directly within your GitHub account at zero additional cost. Every GitHub issue and pull request can be added to a project board, creating a native connection between your code changes and your project planning. For developers who already live in GitHub, this eliminates the context-switching overhead of maintaining a separate project management tool.

The custom fields feature allows you to add priority, effort estimate, sprint, and status fields to issues, creating a lightweight sprint planning system without any additional software. Automation rules automatically update issue status when pull requests are opened or merged, keeping the board current without manual updates. The GitHub Projects experience in 2026 is significantly better than it was in 2022 and now genuinely competes with dedicated project management tools for solo developers whose work revolves around GitHub.

The limitation: GitHub Projects does not have the documentation capabilities of Notion, the speed of Linear, or the client-friendly view of dedicated PM tools. For purely development task tracking without client communication or rich documentation requirements, it is the best zero-cost option. For solo developers who also need to write technical documentation alongside tracking tasks, pair GitHub Projects with GitHub Wiki or a separate documentation tool.

Todoist is a dedicated task management application rather than a project management platform, and for many solo developers it is the right tool precisely because of that focus. The natural language input (“Add auth system to Hospital Project every Monday p1”) creates tasks with project assignment, scheduling, and priority from a single typed sentence. The free plan covers most solo developer needs: five active projects, five collaborators per project, and all core task features including recurring tasks, labels, and filters.

For PHP developers who want a simple “what do I need to do today” tool without Kanban boards or documentation features, Todoist provides the cleanest experience. The apps are available on every platform (iOS, Android, Mac, Windows, web, browser extension) and synchronise instantly. The Productivity Score feature tracks your daily and weekly task completion, which some developers find motivating and others find irrelevant. The paid Pro plan at $4/month adds reminders, task comments, file attachments, and unlimited projects.