Here are some useful tools that I had the opprotunity to develop myself and/or in collaboration with Đorđe Đurđević:

A short review of free software for data collection in experimental psychology PDF

UltraLab — free experimental software

Categor — free software for data coding

LEPlmer — workshop on R basics, data visualisation and linear mixed effects regression in R

Python workshop for psycholinguists

Vektori — software for building co-occurrence vectors (word embeddings)