Crick Software: Makers of 'Clicker' and other software.

Dasher: Free downloadable writing software for those who cannot use a keyboard. Also has an eye track function.

Don Johnston: Software for access to the curriculum for pupils with physical and learning disabilities.

iansyst / Dyslexic.com: Specialists in hardware and software for people with dyslexia. Specialists in voice activated software.

Inclusive Technology: Make and sell hardware and software for disabled people, mainly pupils in school.

Learninggrids.com: Download grids for 'Clicker' and other resources for Crick Software programmes for free.

Maths Base: Small steps programme to help pupils develop numeracy skills.

Penfriend: Word prediction software.

Primary Games: Maths games with free trial versions on the website.

R E M: Educational software retailers

Sensory Software International: Access to communication and the curriculum for people with physical disabilities.

Screen Ruler: Magnifier and highlighter for use on the Windows screen for those with visual or perceptual impairments. Evaluation copy can be downloaded for trial purposes.

Schoolzone: Evaluations of software by teachers and links to free and downloadable resources.

Scientific Word: Software for advanced maths and science students that allows them to write calculations on a computer easily.

Topologika: Educational software

Widgit Software: Makers of 'Writing with Symbols', 'Communicate: In Print' and other software. Both free resources to download and some you have to pay for.

Xavier Software: Small software company developing interesting one-off pieces of software.