Sinclair Research Ltd

Sinclair Research Limited was a company set up by Sir Clive Sinclair to create and promote his computer products.

Their computer products heralded the start of the home computer revolution, making them into a household name during the 1980s and included:

• Sinclair ZX80
• Sinclair ZX81
• Sinclair ZX Spectrum
• Sinclair ZX Spectrum +
• Sinclair ZX Spectrum +128
• Sinclair ZX Spectrum +2
• Sinclair QL

As well as producing and selling the Quantum Leap (known as the Sinclair QL), Sinclair Research added a software range, using their silver label branding - the titles released for the Sinclair QL were:

• Archive - the Psion database program provided with the Sinclair QL.
• Abacus - the Psion spreadsheet program provided with the Sinclair QL.
• Easel - the Psion business graphics program provided with the Sinclair QL.
• Psion Chess - a classic game with a 3D view of the board
• QL Assembler - 68000 machine code assembler
• QL Bounder - An arcade game
• QL Cavern - Platform arcade game featuring BJ
• QL Cash Trader - Accounting package
• QL Classic Adventures - a package consisting of The Adventure and Mordons Quest
• QL Decision Maker - a powerful tool for resolving complex decision-making problems
• QL Entrepreneur - sold as a complete business start-up kit
• QL Project Planner - teaches and applies the principles of critical path analysis.
• QL Fictionary - word game
• QL Games Cartridge - a collection of free games Breakout, Gun, Hunt, Pirate and Zfred
• QL Gardener - a program to provide advice on plants
• QL Home Finance - a bank account manager
• QL Integrated Accounts - an accounting package
• QL Jabber - an arcade game
• QL Macro Assembler - 68000 machine code assembler
• QL Meteor Storm - classic arcade game
• QL MONITOR - 68000 machine code monitor
• QL Toolkit - a suite of additions to SuperBASIC by Tony Tebby
• QL Paint - a drawing package
• QL Pawn - classic text based adventure game
• QL Reversi - classic board game
• QL Quboids - arcade game
• QL Touch n Go - a typing tutor
• Quill - the Psion word processing program provided with the Sinclair QL.
• Software Production Kit

Sinclair also had a couple more arcade games which were never released:

• Bandersnatch
• Orbit

Sinclair also licensed various hardware add-ons which were then sold Sinclair badged

• Micro Peripherals Floppy Disk Interface
• Quest Winchester Hard disk system
• Sinclair Printer
• Sinclair QL 128K RAM (only released to developers)
• Sinclair QL 128Kbyte ROM (never released)
• Sinclair QL Expansion Development Kit (never released)
• Sinclair Vision QL
• Sinclair Wafer RAM Expansion (never released)

They also published QL specific books

• QL User Guide - the standard manual issued with the Sinclair QL
• QL Technical Guide - technical guide to programming machine code which interfaces to QDOS, the Sinclair QL's operating system
• QL Service Manual - repair manual for the QL.

Sinclair also issued the following tools to help retailers:

• Demonstration ROM
• QL Sales Guide