All Governor Limit

Number of SOQL queries: 100
Number of query rows: 50,000
Number of SOSL queries: 20
Number of DML statements: 150
Number of DML rows: 10,000
Maximum CPU time: 10,000
Maximum heap size: 60,00,000
Number of callouts: 100
Number of Email Invocations: 10
Number of future calls: 50
Number of queueable jobs added to the queue: 50
Number of Mobile Apex push calls: 10
Active validation rules per object - 100
Custom apps - 10
Custom fields per object - 500
Custom objects - 400
Tabs - 100
Users: maximum created - 2
Custom report types - 400
Dynamic dashboards per org - 3
HTML .htm, .html, .xhtml  - 5 MB
PDF .pdf  - 25 MB
PPT .ppt, .pptx, .pptm  - 25 MB
RTF .rtf  - 5 MB
Text .c, .cpp, .css, .csv, .ini, .java, .log, .sql, .txt - 5MB
Word .doc, .docx, .docm  - 25 MB
XLS .xls, .xlsx, .xlsm  - 5 MB
XML .xml  - 5 MB
Lead Status - 100
Task Status - 100
Opportunity Stage - 100
Mass Email Limits
You can send mass email to a maximum of 5,000 external email addresses per day per org based on Greenwich Mean Time (GMT).
Role hierarchy -
salesforce license - 2
active flows - 500
rules - 2000
code coverage - 30,00,000 characters
data storage - 20MB
Record Limit - 5MB
Assignment, Auto-Response, and Workflow Rules Limits
Chatter Answers Limits
A question in Chatter Answers can receive up to 500 replies.
Custom Field Limits
Custom Picklist Limits
Limits for customized selection lists that let users pick values from a predefined list of entries.
Custom single-select picklists can have:
Up to 1,000 values
Up to 255 characters per value
Custom multi-select picklists can have:
Up to 500 values
Up to 255 characters per value
Users can select up to 100 values at a time on a record.
General Email Limits
an email with a 25 MB attachment
Mass Email Limits
You can send mass email to a maximum of 5,000 external email addresses per day per org based on Greenwich Mean Time (GMT).
Active validation rules per object - 100
Custom applications - 10
Custom fields per object - 500
Custom objects - 400
Custom Tabs - 100
Users: maximum created - 2
Max number of custom obeject - 400
Max number of fields per object - 500
Max number of user account - 2
Max number of validation rule - 100
Max number of custom app - 10
Max number of Tabs - 100
Max number of Master Details Relationship - 2
Max number of Custom Report - 400
Max number of file attachment - 2GB
Max number of people you can add to chat - 10
Max number of HTML - 5MB, PDF - 25MB, Word - 25MB, XLS - 5MB
Max number of Approvel Prcess - Approvel process per org - 1000, Approvel process per object - 300
Max number of custom logo - 20KB