Reads51 4.53 was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The most popular versions of the software are 4.5 and 4.2.
The Reads51 installer is commonly called Reads400.exe, Reads51.exe or UnGins.exe etc. ".src" and ".rpj" are the extensions this free PC software can operate with. We recommend checking the downloaded files with any free antivirus. The program lies within Development Tools, more precisely IDE. The actual developer of the free software is Rigel Corporation. The latest version of the software can be installed on PCs running Windows XP/Vista/7/8/10/11, 32-bit.
From the developer:
Reads51 is an integrated applications software development system, which runs on an IBM PC or compatible host. Reads51 allows writing, compiling, assembling, debugging, downloading, and running applications software in the MCS-51 language.
Reads51 contains a C compiler, relative assembler, linker/locator, editor, chip simulator, assembly language debugger, and host-to-board communications in a user-friendly, menu-driven environment.
You may want to check out more software, such as PHPEdit, Aqua Data Studio or Raize Components, which might be similar to Reads51.