Polish Panel Survey POLPAN 1988 – 2013

Other panel studies
Social Diagnosis, Poland
Latvian Panel Study of Entrepreneurial Dynamics (LV-PSED)
German Internet Panel (GIP)
German Longitudinal Election Study (GLES)
German National Educational Panel Study (NEPS)
Netherlands Kinship Panel Study (NKPS)
Hungarian Life Course Survey
UK Youth Cohort Study (YCS)
European Union Statistics on Income and Living Conditions (EU-SILC)
The Household, Income and Labour Dynamics in Australia (HILDA)

Data repositories and catalogues
Data Catalogue of the UK Data Service including many (mainly British/UK) panel studies
ICPSR Data Repository