Windows Callisto (2002)

For other uses, see Windows Callisto.
Windows Callisto (Codenamed: Callisto, and internally referred to as Windows NeptuneSE) was a Classic Revival Version of Windows released to Manufacturing in March 2002, later being released to the public in August 2002.
This version was directed towards people who like the look and feel of Windows 9x, NT 4, and 2000, people with low-end PCs, and businesses that couldn't upgrade to Windows XP. This version of Windows is debated to be the same as Windows Neptune due to the internal name being NeptuneSE even though Callisto was being mentioned by Microsoft as early as April 1998.
== Development ==
The development of Callisto commenced three years earlier than previously anticipated, in January 2000, following the cancellation of the projects "Neptune" and "Odyssey". Concurrently, Callisto Non-Disclosure Agreements (NDAs) were distributed to selected testers, and builds were subsequently dispatched for testing in early February 2000, with Build 2071 marking the initial release to testers. The period from January 2000 to early March 2000 was internally labeled as the Experimental Development Phase. In June 2000, the Callisto project transitioned from builds 22xx to builds 23xx. Around this time, Experimental Builds were compiled for Windows Umbriel, which served as the first and only Full Education Release for Windows. This sharing of Umbriel files with Callisto led some to mistakenly perceive them as potential internal Neptune builds in the future. By February 2001, a project under the codename "Oregon" commenced development with the aim of introducing a Server Edition to Callisto. Early builds of Callisto Server were identified as Windows Codename "Oregon". Development persisted until March 2002, culminating in the compilation of the Release to Manufacturing (RTM) build, which was subsequently made available to the public in August 2002.
== List of builds ==
Builds 2077-2989, and 2999.3 were made by 75.143.180.26. Don't dox him.
=== Milestone 1 ===
=== Milestone 2 ===
=== Milestone 3 ===
5.50.2300.2
5.50.2306.1
5.50.2311.2
5.50.2311.3
5.50.2317.1
5.50.2320.2
5.50.2326.1
5.50.2336.1
5.50.2339.1
5.50.2340.1
5.50.2349.1
5.50.2350.14
=== Milestone 4 ===
5.50.2354.1
5.50.2356.6
5.50.2365.1
5.50.2372.1
5.50.2380.1
5.50.2389.1
5.50.2389.2 (Confirmed)
5.50.2395.1
5.50.2400.1
5.50.2407.1
=== Milestone 5 ===
5.50.2488.1 (Confirmed)
5.50.2523.0 (Available)
5.50.2664.1 (Confirmed)
5.50.2724.9 (Unconfirmed)
5.50.2718.7 (Confirmed)
5.50.2745.0 (Confirmed)
5.50.2748.8 (Available)
=== Milestone 6 ===
5.50.2755.1
5.50.2761.2
5.50.2785.4 (Unconfirmed)
5.50.2794.1
5.50.2800.1
=== Milestone 7 ===
5.50.2809.4 (Unconfirmed)
5.50.2815.1
5.50.2819.1
5.50.2823.1
5.50.2827.1
5.50.2830.1
5.50.2834.1 (Fake)
5.50.2839.3 (Fake)
5.50.2849.3 (Confirmed)
5.50.2889.3 (Unconfirmed)
=== RC1 ===
5.50.2889.8 (Confirmed)
5.50.2890.4 (Unconfirmed)
5.50.2891.8 (Confirmed)
5.50.2894.9 (Fake)
5.50.2900.0 (Available)
5.50.2919.9 (Fake)
5.50.2919.7 (Unconfirmed)
=== RC2 ===
5.50.2925.1
5.50.2930.1
5.50.2934.9 (Unconfirmed)
5.50.2948.8 (Confirmed)
5.50.2958.5 (Fake)
5.50.2960.1 (Available)
5.50.2975.1
5.50.2989.9 (Confirmed)
=== Pre-RTM ===
=== RTM ===
=== Post-RTM ===
5.50.2999.3 (Fake)
Category:Fictional Windows versions