Prediction markets and tools that shut down
19 products that stopped serving between 2008 and 2026, newest first. Each date comes from the vendor’s own announcement, not from a news story about it; where the notice names only the month, the month is all we print. 11 of them have a page on what to use instead; the rest are here because the date is the fact a reader comes for, and nothing in the catalogue replaces them.
20269
FireplaceTrading Clients & Bots
A professional terminal that sat on top of other people's venues — one workspace for Polymarket and Kalshi markets, positions, news and wallet flow, with a wallet it held for you and a data API it sold separately.
TrepaPrediction Market Venues
A Solana app where you named the exact BTC price instead of picking a side, and your share of the pool scaled with how close you got — sixty-second rounds, run for one communal hour a day.
ZeitgeistPrediction Market Venues
A GPL-licensed Substrate layer 1, deployed as a Polkadot parachain, whose runtime was the prediction market — markets, an AMM, an order book, oracle reporting and a ZTG-staked court of jurors, all as extrinsics.
INFERForecasting Platforms
A public crowd forecasting program whose aggregated estimates fed US policy research — seasons of scored geopolitical, technology and policy questions, ranked by relative Brier score and argued in written rationales.
MetaforecastPrediction Market Data APIs
A free search engine over probabilities from prediction markets and forecasting platforms, with star-rated aggregates, a public GraphQL API and MIT-licensed source anybody could run.
SignalsPrediction Market Venues
A market on Bitcoin's daily close, on the Citrea network, where traders priced which price range BTC would settle in rather than a yes-or-no outcome.
Its team wound it down for lack of fit. The final market closed on 16 June 2026 with none after it, and balances could be claimed in the app until 15 July 2026.
Dome APIPrediction Market Data APIs
One REST API and a TypeScript and Python SDK over both Polymarket and Kalshi — prices, candlesticks, order-book history, wallet P&L and a cross-venue match for the same sports event.
Drift BETPrediction Market Venues
Binary YES/NO event contracts on Solana, run as price-bounded perpetual markets inside Drift's own exchange, so one margin account could hold a position, thirty-odd collateral tokens and a hedge at the same time.
Insight PredictionPrediction Market Venues
A small crypto-funded event market run by academics, closed to the United States, where the operator's own bot was often the one quoting both sides.
20252
ProboPrediction Market Venues
An Indian app for trading yes-or-no contracts in rupees on cricket, news, markets and politics, the format the country called opinion trading.
Its operator stopped all money operations after India's online gaming law passed; its own notice names no day. The app never reopened and later said it was closed for business.
PredictionBookForecasting Platforms
A public notebook for personal predictions, where you wrote down what you thought would happen, attached a probability and a date, and were scored on how calibrated you turned out to be.
20211
ForecastForecasting Platforms
Facebook's play-money market on world events, an iOS app where users spent points to buy and sell the outcomes they expected and explained their trades.
Facebook's NPE Team sunset it on 15 October 2021 and began deleting all user information that day, after telling users to download their predictions from the app's settings.
20201
Replication MarketsForecasting Platforms
A DARPA-funded research project where anyone could forecast whether published social-science findings would replicate, first in a survey and then in a market, for cash prizes.
20191
VeilPrediction Market Venues
A non-custodial Ethereum app for trading prediction markets, nearly all of them Augur markets underneath, with its own tool for creating new ones.
Its team sunset it. No new markets were added from 11 July 2019, trading was disabled on 24 July, and users were told to withdraw active positions into Augur.
20161
iPredictPrediction Market Venues
New Zealand's real-money prediction market, run by Victoria University of Wellington's Victoria Link, where traders bought and sold stocks on political and economic events.
Unable to get an anti-money-laundering exemption, it wound up. Trading was suspended when its FMA exemption lapsed at midnight on 30 November 2016, and stocks paid out at market value.
20151
SciCastForecasting Platforms
A George Mason University research project, funded by IARPA, where the public forecast science and technology questions and could link one question's forecast to another's.
When its IARPA funding ended it suspended forecasting on 12 June 2015 for what it called the summer. The holding page that followed said the research funding was complete.
Source: SciCast, George Mason University, So Long, and Thanks for All the Fish! →
20131
IntradePrediction Market Venues
A Dublin-based real-money exchange where members bought and sold yes-or-no contracts on elections, economics and the news, and the price was read as a probability.
20101
HubdubForecasting Platforms
A play-money market on news questions, where members staked Hubdub dollars on what would happen next and were ranked by net worth.
Its team closed it on 30 April 2010 and turned to FanDuel, which had spun out of it. The farewell page kept a top-20 leaderboard and pointed users to a Google group.
20081
TradeSportsPrediction Market Venues
A real-money exchange where members bought and sold contracts with each other on the results of sports events.
Its owners closed it in November 2008. All open markets were paused and expired on 21 November; members who had not withdrawn by 28 November were to be emailed to arrange a refund.
Products that still run but no longer on terms you can build on are not here; they sit with the rest on what to use instead, labelled “Terms changed”. A product you know shut down and do not see here can be reported from any page’s “Report an error” form, with the vendor’s notice.