Consensus estimates are available from a company's profile in Capital IQ (see access details). You can also screen for companies or equities with specific estimate values by going to Screening-->Equities or Companies-->Financial Information-->Estimates.
Other resources for estimates include:
- PitchBook (see access details) - from a company's profile, select Financials-->Estimates.
- Bloomberg (see access details).
- ticker <EQUITY> EEB <GO> provides the Estimate Consensus Detail
- ticker <EQUITY> EEO <GO> provides the Consensus Overview
For historical research, use the IBES dataset within WRDS (see access details).