BIREP – Representations of finite dimensional algebras at Bielefeld
BIREP header picture 1
BIREP header picture 2

Further links

Google scholar
Quantum algebra - arXiv feed for topics with the tag QA
Academia - research community
DFG Schwerpunktprogramm Darstellungstheorie
Paperscape - browse the arXiv universe

LaTeX, R and SAGE
Overleaf - online LaTeX editor
R-bloggers - predominant R blog
crantastic - search for CRAN packages
Official Sage website - algebraic software system, Python based
Sage Cloud - run Sage code on the cloud
SageCell - embed Sage cells into your own website

Miscellaneous - data visualisations
infosthetics - creative design and information visualisation
flytext - web-based text editor for Dropbox documents