A leaked document setting out the government's IT strategy for the next five years is "complacent" and lacks ambition, the Conservatives say.
The paper details plans to save billions through greater use of social media and innovations such as an online "apps store" for civil servants.
It also predicts that by 2020 new software will allow computers to do tasks currently carried out by humans.
The government said it did not comment on leaked documents.
The Conservatives, who obtained the document, have set up a website, makeitbetter.org.uk, where it is published in full, with a facility for people to comment on it.
The document, entitled Government ICT Strategy: New World, New Challenges, sets out how the government plans to harness computer technology to save cash and improve public services up to 2015.