RFC 3168 - The Addition of Explicit Congestion Notification to IP
- Proposed standard adding extra information to TCP allowing routers to inform end-points about congestion.
- http://tools.ietf.org/html/rfc3168

RFC 793 - Transmission Control Protocol
- Standard, STD7, the basis for all later extensions.
- http://tools.ietf.org/html/rfc793

RFC 2861 - TCP Congestion Window Validation
- Experimental standard that addresses revalidation of the congestion window after a period when the connection was not network-limited.
- http://tools.ietf.org/html/rfc2861

RFC 3782 - The NewReno Modification to TCP's Fast Recovery Algorithm
- Proposed standard.
- http://tools.ietf.org/html/rfc3782

RFC 2415 - Simulation Studies of Increased Initial TCP Window Size
- Informational document.
- http://tools.ietf.org/html/rfc2415

RFC 3390 - Increasing TCP's Initial Window
- Proposed standard, intended to improve startup performance of TCP.
- http://tools.ietf.org/html/rfc3390

RFC 2581 - TCP Congestion Control
- Proposed standard set of congestion avoidance features.
- http://tools.ietf.org/html/rfc2581

RFC 2988 - Computing TCP's Retransmission Timer
- Proposed standard.
- http://tools.ietf.org/html/rfc2988

RFC 2883 - An Extension to the Selective Acknowledgement Option for TCP
- Standard extending the use of SACK to acknowledging duplicate packets.
- http://tools.ietf.org/html/rfc2883

RFC 2018 - TCP Selective Acknowledgement Options
- Proposed standard defining the SACK extension, a technique to better recover from packet loss.
- http://tools.ietf.org/html/rfc2018

RFC 3042 - Enhancing TCP's Loss Recovery Using Limited Transmit
- Proposed standard that decreases reliance on the retransmission timer.
- http://tools.ietf.org/html/rfc3042

RFC 1323 - TCP Extensions for High Performance
- Defines TCP Window Scale option, timestamps, and protection against wrapped sequence numbers (PAWS).
- http://tools.ietf.org/html/rfc1323

BCP28 - Enhancing TCP Over Satellite Channels using Standard Mechanisms
- Best current practices document describing ways to improve TCP performance over satellite links.
- http://www.rfc-editor.org/rfc/bcp/bcp28.txt