linalg.org - Exact linear algebra computation tools for all.

Linear and Multilinear Algebra, Matrix Theory - An informative description of the subject of linear algebra and all of its subfields from the Mathematical Atlas.

Linear Algebra and Applications Textbook - Online text, each page is a GIF format image.

Elements of Abstract and Linear Algebra - An online textbook on abstract algebra with emphasis on linear algebra.

Linear Algebra Textbook - By Jim Hefferon. Free for downloading: covers the material of an undergraduate first linear algebra course.

ArXiv front - LA Linear Algebra - Papers and preprints.

Linear and Multilinear Algebra - Journal home page. Contents from volume 1.

Elementary Linear Algebra - Online Lecture Notes (PostScript) by Keith Matthews, 1991.

Abstract Linear Spaces - From the History of Mathematics project.

Linear Algebra Toolkit - Step by step solutions of problems such as Gauss-Jordan reduction, calculating the determinant, and finding a basis of a space spanned by given vectors.

Matrix multiplication - An interactive micro-course for beginners, by Hans Lundmark. (Uses JavaScript.)