Every “speed up your PC” claim is a claim about a specific part of Windows. This site documents those parts.

If a tool says it will clean your registry, free your memory or optimise your services, it is asserting that writing to a particular key, calling a particular API or changing a particular Start value will make your machine faster. Those surfaces are documented. Once you know what each one does by default, you can check the claim yourself — which is the only durable way to tell a useful utility from an expensive one.

Tenglnet published its Windows Winset utilities at tlwinset.com from roughly 2005 to 2016. The registration lapsed, the address passed through other owners, and it came to this publication in 2026. Working Set has no connection to Tenglnet, holds no copy of its software, distributes none, and has never run any of it.

Subject What Windows does by default, so a speed-up claim can be checked Covers Memory · registry · services · boot · disk · claims We ran it No. We hold no copy and distribute none. Sourcing Microsoft documentation · Sysinternals · archived vendor pages Ledger rows See the Ledger Open questions 19 · listed Published 2026-08-05 Last verified 2026-08-05

§1Start here

HARMFUL
NO-OP Free RAM is the wrong number §M
SUPERSEDED
UNVERIFIED What a “registry error” actually is §R
DEPENDS Measure it yourself, with what is already installed §X

§2Everything here, as settled claims

Twelve pieces. The verdict is the site’s whole vocabulary and it is fixed: a claim is a NO-OP, it is SUPERSEDED, it is a TRADE with a stated cost, it is HARMFUL, it DEPENDS on a named condition, or we could not confirm it and it is UNVERIFIED. A piece that settles more than one claim carries more than one code, and the codes on each line below are the ones printed in that piece’s own verdict block.

SUPERSEDED Windows Winset, read as an index of Windows mechanisms §W · 3,500w
SUPERSEDED What Windows 8 changed that broke the tweak industry §B · 4,100w
UNSAFE-CLAIM This URL used to be an installer §C · 2,300w
DEPENDS Windows 10 or Linux, from both sides of the sentence §X · 3,600w
HARMFUL
NO-OP Free RAM is the wrong number §M · 2,600w
SUPERSEDED
UNVERIFIED What a “registry error” actually is §R · 3,500w
TRADE
DEPENDS
UNVERIFIED What a service costs when it is doing nothing §S · 3,500w
HARMFUL
SUPERSEDED
NO-OP What happens before your desktop appears §B · 3,700w
SUPERSEDED
NO-OP What “junk files” are, and what Windows already deletes §D · 2,400w
TRADE
DEPENDS
UNVERIFIED Sixteen places Windows can start a program §A · 3,600w
DEPENDS Measure it yourself, with what is already installed §X · 2,700w
UNVERIFIED How one XML file put a two-person vendor on a thousand download sites §P · 3,000w

§3Changed this month

Every edit to a Ledger row is dated and kept. Nothing is silently revised. The full log is at /mechanisms/changes/.

Nothing yet — the Ledger is published with this site and its first revisions will appear here.

§4Open questions

Nineteen things we could not settle from a primary source, each with the single piece of evidence that would close it, all of them at /mechanisms/unverified/. Sixteen are Ledger rows and carry the UNVERIFIED code. The three below are questions about the evidence base and about this domain’s own history rather than claim–surface pairs, so they are not rows and they carry no verdict code. If you have one of these, the address is the contact form and corrections are published with the same prominence as the original claim.