Epsilon Download Manager
Windows · v1.4.016-connection downloads with exact resume, a BitTorrent client written from scratch, YouTube and video grabbing, and one-click integration for Chrome, Edge, Brave and Firefox.
MAKAN · DIGITAL STUDIO
Windows software • Business web apps • Android apps
I build Android apps and web tools.
✓ Open source where it matters ✓ Verifiable downloads ✓ No bundled ads
$ ls --shipped
winepsilon-download-managerv1.4.0 ★ webcrm-workspacev10.2.0 ★ websubtitle-translatorlive pwajeu-cafelive webdark-sailsv1.0 webcaesar-cipherv1.0… and 18 more
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Products
One for your own PC, one for your company. Both are built from scratch and maintained here.
16-connection downloads with exact resume, a BitTorrent client written from scratch, YouTube and video grabbing, and one-click integration for Chrome, Edge, Brave and Firefox.
A free CRM for trading companies: customers and pipeline, supplier quotes and comparison, quotations, shipments and payments. Runs on your own host or office PC, in Persian and English.
Selected work
Games, tools and experiments you can open right in the browser — every one built from scratch.
Translate .srt/.vtt subtitles with your own AI key — Gemini, Groq, OpenRouter, or fully offline with Ollama.
PWA
Web game
A pirate-themed blackjack table with ranks, insurance and splits.
Web tool
An interactive Caesar cipher wheel for encoding and decoding text.
Web tool
A rotor-accurate Enigma M3 cipher machine with a matrix-horror skin.
PWA
An installable offline meal planner and macro coach.
Android apps
Direct APK downloads with real SHA-256 checksums — no store, no ads, no tracking.
Fast unit conversion across everyday and technical categories — in the browser or on Android.
Track up to five stocks with live prices, Telegram move-alerts, and ranked market news — no server required.
Build streaks that visibly grow — from a seedling to a tree — with heatmaps, calendars, and full offline backup.
Now & the lab
A living studio: this part changes as projects ship and experiments teach me something.
Live status
Learned: A single embedded image can 30x an HTML file's size — always ship binary assets separately, never inline.
Learned: Two players who are both online at once barely need a server at all — a direct peer connection is enough.
Learned: Rotor-stepping logic is the entire trick to a working Enigma sim — everything else is just UI around it.
Learned: Ten hand-built inline SVGs load faster and theme easier than any icon font or image sprite.
Learned: A service worker makes "works with no signal" a real, testable claim instead of a nice-to-have.
Learned: Free hosts can silently drop oversized files during extraction — always verify what actually made it to the server.
Code
Source, experiments and the technical pieces behind everything on this site.
About
I'm MAKAN — I build Android apps and web tools, mostly solo, mostly at night.
I like software that does one thing well: fast to open, honest about what it does, and built without unnecessary dependencies. Most of what's on this site started as a problem I wanted solved for myself first — a conversion I needed, a cipher I wanted to understand, a game I wanted to finish.
Contact
Have a project, an idea, or feedback on Epsilon or the CRM? Write directly or use the form — it reaches the same inbox.
makan20042002@gmail.comAvailable for new projects