DarkMatter
A project and task manager designed with an ADHD mind in view: Focus Mode, a smart daily planner, a workload heatmap, a rescue flow, and recurring tasks with burnout-aware spacing.
Try it live →BlackWall
A WebAuthn-only OAuth 2.1 and OIDC server with PKCE, multi-tenant architecture, JWT and opaque tokens, named privilege levels, audit logging, introspection, revocation, rate limiting and a user portal.
Visit BlackWall →Leviathan — Forensics Suite
A full browser-based forensic workbench: file analysis, metadata extraction, hash verification, string extraction and structure analysis. No server, no upload.
Open the workbench →Hex Editor
A browser hex editor with analysis panels. Edit binary files directly, with structure inspection and offset navigation.
Open hex editor →BoRIS
Binwalk-style firmware analysis in the browser: signature detection, entropy analysis and extractable-region identification, with nothing to install.
Open BoRIS →Binaural Beats Lab
A browser tone generator with frequency presets for focus, rest and sleep. Headphone-friendly, with nothing to install.
Open the lab →Mode 7
A teletext-inspired interactive-fiction engine: character-cell aesthetics, an atmospheric tone and branching narrative.
Enter Mode 7 →Sudoku
Build boards by hand, generate puzzles, check solutions, or let the solver work through them. Constraint propagation and backtracking under the hood.
Play sudoku →Shikaku · 四角に切れ
A quiet Japanese logic puzzle — divide the grid into rectangles, each holding one number equal to its area. Generator, solver and three sizes.
Play shikaku →Calculator
Scientific, graphing and unit conversion — more capable than the system calculator, without the weight of a full CAS.
Open calculator →