Toolkit for Salesforce
https://cloudtoolkit.co/
Schema Lister
https://schemalister.herokuapp.com
Field Dumper – Extract Data Model to Excel
https://appexchange.salesforce.com/appxListingDetail?listingId=a0N3A00000EJg2hUAD
FieldSpy by Sonar: Field Usage Report | Analyze & Cleanup Unused Fields
https://appexchange.salesforce.com/appxListingDetail?listingId=a0N4V00000GuIM2UAN
Org Dictionary
https://appexchange.salesforce.com/appxListingDetail?listingId=a0N3A00000FMkkIUAT
Open-source to help building the Data Dictionary:
SFDC Generate Data Dictionary (GitHb)
https://github.com/gavignon/sfdc-generate-data-dictionary
https://github.com/forcebewithyou/sfdc-generate-data-dictionary
Data Dictionary Generator (DataDicGen) GitHub)
https://github.com/marsson/dataDicGen
Paid External Tools building the Data Dictionary:
Collibra
OneTrust
Spekit
ERBuilder Data Modeler by Softbuilder
A data lineage tool is software that allow you to map, view and inspect the data lineage, some tools are:
Collibra
OvalEdge
Datameer