Python2/3 (asyncio) - SQL ORM (SQLAlchemy, peewee, Pony, Django ORM) - SQL (MySQL, PostgreSQL) - NoSQL (MongoDB, Redis, Memcached, AerospikeDB, Casandra, Mnesia, Clickhouse, etc) - Network (Asyncio, tornado, twisted, greenlet, etc) - API (Rest, WS, JSON/XML RPC) - Test (Unit, Auto, Doc, Fuzzing)