Hello. I'm a solo developer. I built Axomind.
It's a collaborative platform combining Gantt planning, encrypted messaging (AES-256-GCM) and mind maps. Zero tracking. 26 themes (light and dark variants).
The full stack runs on a single refurbished mini PC. Intel i5, 2 cores, 16GB RAM, 35W. 100€ on the second-hand market. 8€ per month in electricity.
Load tested at 200 concurrent users. Zero failures. Median response 78ms. Self-hosted cost is about 90% below an equivalent AWS setup.
The client keeps a local copy of the data and only asks the server for what changed since the last sync. An in-memory cache sits in front of the database. Deletions propagate as small markers. Sensitive text fields are AES-256-GCM encrypted before touching the disk. The database shows ciphertext, never plaintext.
