Lists of sys tables:

Category Type Name Description Example
Server Configuration Options sys.configurations SELECT * FROM sys.configurations
List Databases sys.databases SELECT * FROM sys.databases
List Tables sys.tables SELECT * FROM sys.tables
List Columns from all Database Tables sys.columns SELECT * FROM sys.columns
List Registered Database Events sys.events SELECT * FROM sys.events
List views sys.views SELECT * FROM sys.views
Dynamic Management Views sys.dm_exec_* provide information about execution of .NET CLR Modules and connections. All contained here are a number of views available to help you drill into issues related to execution of queries
Dynamic Management Views sys.dm_os_* report on memory, locks, and execution scheduling
Dynamic Management Views sys.dm_trans_* provide insight into transactions and isolation
Dynamic Management Views sys.dm_io_* monitoring disk I/O
Dynamic Management Views sys.dm_db_* provide database-level data
sys.indexes
sys.objects SELECT * FROM sys.objects
sys.allocation_units
sys.numbered_procedures
sys.assembly_modules
sys.numbered_procedure_parameters
sys.check_constraints
sys.objects
sys.parameters
sys.computed_columns
sys.partitions
sys.default_constraints
sys.procedures
sys.service_queues
sys.event_notifications
sys.sql_dependencies
sys.extended_procedures
sys.stats
sys.foreign_keys
sys.stats_columns
sys.foreign_key_columns
sys.sql_modules
sys.fulltext_indexes
sys.synonyms
sys.fulltext_index_columns
sys.tables
sys.identity_columns
sys.triggers
sys.index_columns
sys.trigger_events
sys.key_constraints
sys.traces (Transact-SQL)
sys.backup_devices
sys.database_files
sys.database_mirroring
sys.database_recovery_status
sys.master_files