WEBster Assembly Language Libraries
Assembly language programming is a whole lot easier if you've got a decent set of library routines that handle many common tasks. The following libraries are all available for free use in your assembly projects.

The "UCR Standard Library for 80x86 Assembly Programmers
The UCR Standard Library for 80x86 Assembly Language Programmers

Note: The UCR Standard Library currently exists in two releases:
V1.0 (labelled version 34 or thereabouts) is the "working" version. This version is stable and is unlikely to ever change.
V2.0 is an early alpha with lots of bugs and nearly non-existent documentation. This version has been abandoned in favor of development of the HLA (High Level Assembly) Standard Library.

Check out v1.0 of the library

Check out v2.0 of the library

Other DOS-Based Libraries
ALIB 4.0 Assembly Language Library

Download ALIB4A.ZIP

Download ALIB4B.ZIP

Download ALIB4C.ZIP

Download Assembly Wizard (ASMWIZ21.ZIP)

Freelib v3.0 Assembly Language Library

Download Freelib v3.0

Win32 Libraries
The HLA Standard Library contains lots of very useful assembly language routines for assembly language programmers. Source code is all in HLA format.

See the description of HLA on this site for details on the HLA Standard Library.

HLA Standard Library for MASM32 Users

Cobra v2.1 Console App Library for Win32 (cobrav2.1.zip)