What to use instead

Most people do not arrive at a catalogue to browse. They arrive because something they relied on shut down, changed its terms, or costs more than the job is worth. One page per product, with what in this catalogue does that job now. The ones that shut down are also listed by date, with the ones nothing replaces, on the chronology of shutdowns.

• Augur

  Terms changed

  A decentralised prediction-market protocol on Ethereum where disputed outcomes are settled by REP holders staking against each other, and in the last resort by splitting the protocol into one universe per outcome.

  5 replacements

• Dome API

  Shut down

  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.

  7 replacements

• Drift BET

  Shut down

  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.

  6 replacements

• Fireplace

  Shut down

  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.

  6 replacements

• INFER

  Shut down

  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.

  4 replacements

• Insight Prediction

  Shut down

  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.

  4 replacements

• Intrade

  Shut down

  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.

  3 replacements

• Kalshi

  Still running

  A CFTC-designated contract market for event contracts, settled in dollars against a source named per market, with identity verification before you can trade.

  8 replacements

• Metaforecast

  Shut down

  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.

  6 replacements

• Polymarket

  Still running

  The international Polymarket — a self-custody order book on Polygon, collateralised in a USDC-backed token and resolved by the UMA optimistic oracle rather than by the venue itself.

  6 replacements

• PredictionBook

  Shut down

  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.

  5 replacements

• PredictIt

  Still running

  A US-only real-money market in political event contracts, run by a non-profit under CFTC staff no-action relief, with a $3,500 cap on any one contract.

  6 replacements

• Replication Markets

  Shut down

  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.

  4 replacements

• Trepa

  Shut down

  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.

  6 replacements

• Zeitgeist

  Shut down

  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.

  5 replacements