Best new productivity, AI and creator resources: day 26

Best Productivity Resources turns twenty-six days old today. This roundup pulls together the strongest recent additions for creators, developers, founders and anyone building with AI. Every resource was reviewed by hand and links straight to its original website or repository.

1. Compositor, a free image editor for Mac

Compositor is a free, open-source image editor for Mac, built around practical compositing and post-production. You get layers, masks, blend modes, adjustment layers, filters, background removal, healing, cloning, liquify and other familiar editing tools. Link: https://robbietilton.com/compositor

2. ServerKit for running apps on your own VPS

ServerKit is a lightweight, open-source control panel for deploying and managing web apps, databases and containers on a VPS. It takes care of Git deployments, automatic reverse-proxy setup, SSL, monitoring and atomic updates, all without needing a Kubernetes-sized setup. Link: https://github.com/jhd3197/ServerKit

3. Kitaru for replaying agent runs

Kitaru turns recorded AI-agent traces into replayable evaluations. You can import sessions from popular observability tools and replay them against a new model, prompt or code change. It also reuses recorded tool responses, so the comparisons are more faithful. Link: https://github.com/zenml-io/kitaru

4. ASO Skills for app-store growth

ASO Skills is an open-source collection for app-store growth work, and it covers a lot of ground: audits, keyword research, metadata, competitors, localization, screenshots, reviews, launch planning, Apple Search Ads, retention, monetization and paywall optimization. Link: https://github.com/appeeky/aso-skills

5. Startup Skill, from idea to pitch

Startup Skill gives Claude Code a structured workflow for taking an idea through market research, customer discovery, positioning, competitive analysis, financial thinking and validation, all the way to investor-ready pitches. Link: https://github.com/ferdinandobons/startup-skill

6. FFmpeg Skill for local media editing

FFmpeg Skill lets compatible coding agents handle local video and audio editing through clear, reusable instructions. It's handy for trimming, converting, combining and processing media, with no files uploaded to a cloud service and no API key to add. Link: https://github.com/kajisho5/ffmpeg-skill

7. Superstreamer, an open-source streaming toolkit

Superstreamer is an open-source video streaming toolkit covering ingest, transcoding, packaging, storage and adaptive HLS playback. Through a developer-friendly API, it supports modern codecs, subtitles, DRM-ready packaging and server-side ad insertion. Link: https://github.com/superstreamerapp/superstreamer

8. 1000UserGuide for finding your first users

Launching something and need early users? 1000UserGuide collects more than 300 places where indie developers and entrepreneurs can promote a product and find them. The list covers international directories, communities, Reddit, Chinese platforms and AI navigation sites. Link: https://github.com/naxiaoduo/1000userguide

9. Agent Skills Workflow Template for repeatable agent work

Michael Shimeles' Agent Skills Workflow Template is a practical collection of AGENTS.md patterns and reusable skills for Claude Code, Cursor and Codex. If your agent usage is a bit informal right now, it helps turn it into a repeatable project workflow. Link: https://github.com/michaelshimeles/skills

10. Aliens Eye for username checks

Aliens Eye is an open-source OSINT scanner that checks a username across more than 840 platforms. It combines multiple detection signals, and you can use it as a Python package or a command-line tool. Link: https://github.com/arxhr007/Aliens_eye

A few more recent additions

There's more where that came from. Stanley helps you plan and publish social content, vflow lets you browse AI video previews and the prompts behind them, and Reelfolio is for portfolio showreels. Fontshare has free typefaces, Hugeicons covers design and code icons, and remove.bg handles background removal. On top of that, there are fresh mockup libraries from LS Graphics, Wannathis and Mockup Tree.

Where to begin

Pick whatever's closest to today's task. Try Compositor for image work, Kitaru for evaluating an agent, ASO Skills for app growth, Startup Skill for validating an idea, ServerKit for self-hosting, or 1000UserGuide when you need your first users. Browse every addition at https://bestproductivityresources.com/directory