GMacros
An AI-assisted CAM desktop app for CNC workshops, together with a store for Alphacam add-ins.
- Go
- PostgreSQL
- Wails
- React
- Code Signing
- Microsoft Store
Projects
Here you can find the products I have shipped, my open-source tools, PyPI packages and browser extensions.
Products & SaaS
Products that run in production and are used by real customers.
ChainConvo
A SaaS that lets teams use their email inbox like a chat app.
- Go
- TypeScript
- SaaS
- OAuth
- Multitenancy
Web ve mobil ziyaretçi analitiği
A multi-tenant, real-time, first-party web and mobile visitor analytics platform that stays reliable against ad blockers.
- Go
- PostgreSQL
- TimescaleDB
- Analytics
- KVKK
- MCP
Business panels
Multi-tenant management applications that bring a company's daily workflows into a single panel.
İnşaat iş akışı paneli
A multi-tenant accounting and project panel for construction firms, bringing cash, cheques, bank movements and project costs together.
- Go
- PostgreSQL
- React
- Multitenancy
- Accounting
Otel iş akışı paneli
A hotel management panel for multi-property businesses, combining front office, sales, operations, reviews, ads and accounting.
- Go
- PostgreSQL
- React
- Hospitality
- AI
Catering yönetim paneli
A management panel covering catering from raw material purchasing and meal production to institutional sales and delivery.
- JavaScript
- Food Safety
- HACCP
- WCAG
Makdos WMS: barkodlu depo ve dağıtım
An offline-first barcode system tracking every step from production and warehouse to in-vehicle sales and end-of-day reconciliation.
- Go
- React Native
- Next.js
- Barcode
- Offline-first
AI tools
Tools that make working with AI models cheaper and more efficient.
cem — Compose · Execute · Multiplex
A CLI that gives the planning to a strong AI model and the typing to a cheap one: better decisions at a lower cost.
- Go
- LLM
- CLI
- IntelliJ Plugin
- Open Source
Details — cem — Compose · Execute · MultiplexGitHubJetBrains Marketplacecem.pw
Makdos AI Agency OS
An industry-independent Agency OS that runs content production, approvals and client communication for agencies in one AI-driven panel.
- Go
- Fiber
- React
- PostgreSQL
- LLM
- Multitenancy
chatinu
A multi-tenant conversation intelligence platform that analyses customer chats with AI to help businesses win back lost customers.
- Go
- PostgreSQL
- WhatsApp API
- Ollama
- Multitenancy
- SIP
minicem
A small, readable text format that is plainer than JSON and simpler than YAML, and uses fewer tokens in AI prompts.
- Python
- PyPI
- LLM
- Open Source
Data & databases
Data storage formats and database libraries.
CemirCol
A columnar storage format with a Rust core, used from Python. It reads faster than Parquet and produces much smaller files.
- Rust
- Python
- PyO3
- PyPI
- Open Source
CemirCol-Go
The Go library for the CemirCol columnar format. It uses the Rust core through the C ABI without extra copies.
- Go
- Rust
- C-ABI
- Open Source
mongofw
A small library that makes working with MongoDB from Python easier.
- Python
- MongoDB
- PyPI
Networking, servers & infrastructure
Tools that move data between servers, manage traffic and automate deployment.
CemirFastRustProxy
A high-performance asynchronous reverse proxy built on Tokio and Hyper.
- Rust
- Tokio
- Hyper
- Networking
- Open Source
ntcp (nettransfer)
A single-binary Go tool that moves files and folders between two servers quickly, securely and with resume support.
- Go
- TLS 1.3
- CLI
- Open Source
wcemail-protocol
An experimental email transport protocol written in Go, with its own server and client library, encryption layer and storage.
- Go
- Networking
- Security
fiberfw
A Go API that follows the system logs and manages firewall and log data in PostgreSQL.
- Go
- Fiber
- OpenAPI
- PostgreSQL
- Security
auto-html
A small repository with test HTML pages that I opened to try out automatic deployment through a webhook.
- HTML
- Webhook
- CI/CD
Developer tools
Tools I use while writing code, debugging and inspecting projects.
cemd
A Markdown editor for the terminal with live preview. It runs as a single binary on Windows, macOS, Linux and Android.
- Go
- CLI
- Markdown
- Open Source
geany-csv
A CSV plugin for the Geany editor that shows the open .csv or .tsv file as an editable table.
- C
- Geany
- CSV
- Open Source
getlibs
A dependency analysis tool that inspects a Python project's imports and separates local modules, the standard library and pip packages.
- Python
- PyPI
- CI/CD
- Open Source
NexusAnalyzer
A tool that scans Python projects and produces a dependency and architecture map as a Markdown report.
- Python
- PyPI
- Open Source
pychron
A small command-line tool that shows the elapsed time live while a Python script runs and prints a summary when it finishes.
- Python
- PyPI
- CLI
reqs2curl
A tool that turns a request built with Python requests into an equivalent curl command.
- Python
- HTTP
- CLI
html_css_js_beautifier
A tool that automatically indents minified or messy HTML, CSS and JavaScript code to make it readable.
- Python
- HTML
- CSS
- JavaScript
SQL_Parse
A small Python tool that automatically indents one-line or messy SQL queries to make them readable.
- Python
- SQL
Xml_Beautifier
A small Python tool that automatically indents XML files to make them readable.
- Python
- XML
python_json_beautifier
A small Python tool that pretty-prints JSON data.
- Python
- JSON
Python libraries
Libraries that simplify the things I need again and again in Python projects.
cemirutils
A library of helper functions and decorators that saves time for both Python beginners and experienced developers.
- Python
- PyPI
- Open Source
cemirfw
A lightweight, all-in-one web framework experiment for Python and PyPy.
- Python
- PyPy
- PyPI
- Web Framework
colorlg
A lightweight, dependency-free Python logger that colors terminal logs and filters out unwanted records.
- Python
- PyPI
- Logging
cemir_print
A colorful printing library for Python that makes terminal messages readable and easy to tell apart.
- Python
- PyPI
cemir_error
A library that catches Python and PyPy errors and shows them in detail, with color.
- Python
- PyPy
- PyPI
matematik_islemleri
A small Python library for doing math operations with short, Turkish-named functions.
- Python
- Education
python-est
Python examples for the virtual POS and 3D Secure integration of banks that use the EST platform.
- Python
- Payment Gateways
- 3D Secure
pil_otomatik_resim_boyutlandirma
A script that shrinks the images in a folder with PIL and places them on a common background so they all end up the same size.
- Python
- PIL
- Image Processing
Browser & email extensions
Extensions I built for Chrome, Firefox, Outlook and Thunderbird.
exte
A two-factor (2FA) authenticator for Chrome. It scans QR codes and encrypts backups; with no network permission, secrets never leave the device.
- JavaScript
- Chrome Extension
- 2FA
- Security
- Open Source
Sentinel — AI AdBlock
An ad blocker extension that blocks known ad networks instantly and learns unfamiliar domains by asking a language model.
- JavaScript
- Chrome Extension
- Manifest V3
- AI
Sinema Modu
A Chrome and Firefox extension that keeps the part you want to read lit and darkens the rest of the page, fully offline.
- JavaScript
- Chrome Extension
- Firefox
- Manifest V3
WhatsApp sohbet ve kişi dışa aktarıcı
A Turkish-language browser extension that downloads WhatsApp Web chats and contacts as HTML, PDF, CSV, TXT or XLSX.
- JavaScript
- Chrome Extension
- Manifest V3
Phishing Protector (Outlook)
An Outlook add-in that scans the content and links of the email you open and warns you about signs of phishing.
- JavaScript
- Outlook Add-in
- Python
- FastAPI
- Security
Phishing Protector (Thunderbird)
A Thunderbird add-on that scans every email you open in the background and warns you when it finds signs of phishing.
- JavaScript
- Thunderbird
- Manifest V3
- Security
Websites
Websites whose source code I have shared.
gokhancoskun.com
The Python source code of gokhancoskun.com, including migrations, deploy scripts and an MCP server.
- Python
- MCP
- PostgreSQL
pythome.com
Source code of pythome.com, a site that collects Python errors with explanations and ways to fix them.
- Python
- Django
- Jinja2
- MySQL
pythome.com (Flask)
The Python error guide pythome.com, rewritten with Flask.
- Python
- Flask
PiSAYISI
An experimental Django project that maps the digits of pi to letters and searches for meaningful words.
- Python
- Django
teslabb
An e-commerce site written with Django, with categories, campaigns, memberships and bank payment modules.
- Python
- Django
- E-commerce
Teaching & community
Turkish resources I prepared for people learning Python and Django.
Göztepeli.com
A Turkish training project that teaches web development with FastAPI through real examples: 21 endpoints, Jinja2, DuckDB and live deployment.
- Python
- FastAPI
- DuckDB
- Education
Çocuklara proje fikirleri
Python project ideas for children and programming beginners that need no extra libraries or internet access.
- Python
- Education
Django ile teknik servis formu (Python 2)
A Turkish step-by-step guide, with code, for building a technical service form site with Django 1.9 and Python 2.
- Python
- Django
- Education
Django ile teknik servis formu (Python 3)
The Python 3 version of the Django 1.9 technical service form guide.
- Python
- Django
- Education
Django'da özel middleware
A Turkish example application showing how to write your own middleware layer in Django.
- Python
- Django
- Education