More places to find contracts
SAM.gov is where Litdesk's opportunity feed comes from, and it stays the single official source for federal contract notices. But a few other government-run systems carry work that never shows up on SAM.gov — because it's posted by a different office, or because it's a request for pricing rather than a new notice. These four are free, run by the government agency named, and open to the public without a subscription. We left off the paid "aggregator" sites that show up in most searches for this topic (GovWin, SamSearch, and similar) — they re-package the same public data behind a subscription, and recommending a paid middleman isn't the kind of "useful" we're going for here.
GSA eBuy
Run by GSA. Useful if you hold a GSA Multiple Award Schedule (MAS) contract.
Buyers across federal, state, and local government post requests for quotes (RFQs) here to schedule holders directly — these often never appear as a separate SAM.gov notice. You need an active MAS contract to respond to most postings.
DIBBS (DLA Internet Bid Board)
Run by the Defense Logistics Agency. Useful for manufacturers and suppliers of parts, supplies, and materiel.
DLA's own system for sealed quotes on parts and supplies — a different buying channel than SAM.gov's contract notices. For U.S. entities, your CAGE code is assigned automatically by DLA as part of SAM.gov registration (FAR 52.204-16) — you don't request one separately through DIBBS. You'll need that CAGE code and a DIBBS account before you can bid here.
SBA SUBNet
Run by the Small Business Administration. Useful if you want subcontracting work, not a prime contract.
Large prime contractors post subcontracting leads here, filterable by state and keyword — a different path onto a federal contract than winning one yourself. Direct questions about a listing to the contact on that listing, not SBA.
Your state's own procurement portal
Run by each state. Useful for state and local work, which SAM.gov does not cover at all.
There's no federal-style single site for this — every state runs its own, with its own registration. Two examples, both ones Litdesk can't read automatically today because they require logging in (see Data sources): California's bid portal, reachable from DGS's Cal eProcure page (no login needed just to browse), and Texas's, reachable from the Comptroller's purchasing page. If you work in a different state, search "[your state] state procurement portal" to find yours.
A caution on anything else you find
Plenty of sites will try to sell you a subscription to "find contracts you're missing." Most of them are reading the same free SAM.gov feed Litdesk already reads, repackaged behind a paywall. Before paying for one, check whether it names its own source — if it won't say where the data comes from, that's a reason to be careful, not a reason to pay.