JASPAR
JASPAR is an open access and widely used database of manually curated, non-redundant transcription factor (TF) binding profiles stored as position frequency matrices (PFM) and transcription factor flexible models (TFFM) for TFs from species in six taxonomic groups. From the supplied PFMs, users may generate position-specific weight matrices (PWM). The JASPAR database was introduced in 2004. There were seven major updates and new releases in 2006, 2008, 2010, 2014, 2016, 2018, 2020 and 2022, which is the latest release of JASPAR.

Availability 

The JASPAR database is an open-source and freely available for scientific community at http://jaspar.genereg.net/.

Similar databases 
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 HOCOMOCO - HOmo sapiens COmprehensive MOdel COllection
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 AnimalTFDB – Animal transcription factor database
 PlantCARE – cis-regulatory elements and transcription factors in plants (2002)
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 MethMotif An integrative database of cell-specific transcription factor binding site motifs coupled with DNA methylation profiles.

References 

Transcription factors
Scientific databases