The #NeverTrump app is not the only vote-swapping tool out there. The websiteVote Pact is encouraging voters disappointed with their party's candidate to enter into an agreement with a similarly disenchanted member of the opposing party. Both voters agree to cast ballots for third parties - boosting the protest vote while in theory negating the damage to the main parties.
TrumpTraders.org is another project aimed at keeping the Republican nominee out of the White House. The site is an initiative of Republicans for Clinton, co-founded by John Stubbs, who served in the administration of former president George W Bush.