- Alley Dog (the Psychology Students' Best Friend)
- BAP (British Association of Psychotherapists)
- BCP (British Confederation of Psychotherapists)
- Bill Holloway
- BoBo Hits Back (my blog)
- BPAS (The British Psychoanalytic Society)
- BusinessBalls.com
- Carl Dawntreader
- ChangingMinds.org
- ClaudeSteiner.com
- Claude Steiner's Brain (blog)
- Classics in the History of Psychology
- Counselling Ltd
- CounsellingResource.com
- Culture, Communications & Media Studies
- EATA (European Association of Transnational Analysis)
- Eddy M. Elmer
- eMedicine: Psychiatry
- Emotional Literacy (alternate name for Claude Steiner's website)
- EricBerne.com
- George Boeree (Shippensburg University)
- Guide to Psychology
- ILoveULove.com
- ISMHO (International Society for Mental Health Online)
- ISSD (International Society for the Study of Disassociation)
- ITA (Institute of Transactional Analysis)
- ITAA (International Transactional Analysis Association)
- Ken Pope's Articles, Research, & Resources in Psychology
- Leeds Psychotherapy Training Institute
- Manchester Gestalt Centre
- My Graffiti Palate (Tony White blog)
- Dr Michael Benjamin’s Weblog
- myRay.com (Dr Michael Benjamin)
- NHS (National Health Service) Knowledge Base
- NCP (National Council of Psychotherapists)
- PsychCentral
- PsychNet-UK.com
- PsychWatch.com
- Relational Transactional Analysis
- Smallwood Publishing (book and psychotherapy aids store)
- Stop Bad Therapy
- TA Resources
- Tony White website and his blog
- Transactional Analysis in Ireland (blog)
- USATAA (United States of America Transnational Analysis Association)
- WebHealer.net
- WPATA (Western Pacific Association of Transnational Analysis)
- University of York, Centre for Reviews & Dissemination