Discover useful software, technical resources and practical tricks in one searchable vault — with trust information when it matters.
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Hand-picked
Claude Code skill that runs an After Action Review after any task/session — pulls concrete lessons into a persistent LESSONS.md file so the agent stops repeating the same mistakes across sessions.
Interactive malware sandbox, real-time execution view.
Free, open threat intelligence sharing platform — free alternative to paid threat intel feeds like Recorded Future.
Open-source, self-hostable voice agent — separates the AI 'brain' from the physical device so any board with mic/speaker/WiFi can act as the body. Fully documented hardware/software connection.
Verified
Free, open-source digital forensics platform — free alternative to X-Ways Forensics for disk image and file analysis.
View toolAI hardware design tool by 3E8 Robotics.
View toolFree, open-source bulk program uninstaller for Windows.
View toolPrice history & price-drop tracker for Indian e-commerce.
View toolFresh
Free monitoring that alerts you when your website or server goes down, checking every minute from up to 12 locations worldwide. It also tells you if your IPs or domains land on spam blacklists.
A free forensic toolkit from Amnesty International's Security Lab. It checks Android and iOS phones for traces of known spyware, such as Pegasus.
Checks your website around the clock and alerts you the moment it goes down. The free plan includes 50 monitors.
An AI video assistant that turns long videos into short clips, summaries, and text.
Learn shortcuts
Find open directory listings via index of "name" on Google.
Refreshes Windows Group Policy and reapplies all policy settings, including settings that have not changed.
One-URL trick to list all subdomains associated with a domain using public certificate transparency data -- no installation needed, just visit the URL with the target domain.
Narrows Google Search results to documents dated before a chosen cutoff. Useful for researching older information; it does not identify or exclude AI-generated content.
Uses Windows DISM to remove superseded component versions from the WinSxS component store and reclaim disk space.
Keyboard Shortcuts for clipping mask and Blending.
Go deeper
Large open-source algorithm implementation collection across languages.
Python voice-assistant/AI model source code.
Free hands-on AWS project-based learning platform.
Curated list of 20 API project ideas, beginner to advanced.
An Ophion-curated list of nine free cybersecurity learning starting points, including OWASP guides, web-security labs and hands-on challenges. Replaces the previous unlinked placeholder list.
Curated start.me page of OSINT tools/links.
Free developer resources/roadmaps aggregator.
Educational videos from Masahiro Sakurai about game creation, design decisions, and development practice.
Your next useful thing
Browse freely, save what you like, and contribute your own tools, tricks and resources. Every community submission is reviewed before it enters the vault.
