Show HN: ProTimer – Time tracker for Claude Code (open source) (github.com)

ProTimer, a newly announced open-source time tracking tool, has been developed for freelancers and contractors utilizing Claude Code. Initially created out of a need to monitor billable hours while working on AI projects, the tool automates time tracking when Claude Code is active and supports manual entry with features like editing activity time ranges and generating invoices in PDF format. Importantly, ProTimer is designed to keep user data entirely local, with no reliance on cloud storage or subscriptions, which enhances privacy and security for users. This open-source release is significant for the AI/ML community as it invites developers to modify and enhance the tool, giving them a foundation to build upon or commercialize if desired. The original creator, now focusing on prior commitments, encourages forks but won't be merging contributions, emphasizing a depth-first approach to development. With its local-first architecture, ProTimer promises to be a valuable resource for those in the AI development space, particularly for managing project time efficiently without the need for complex cloud integrations.