Microsoft is working hard to come up with a groupware offering, but analysts do not expect the company to produce a credible rival to Notes for another year or so.

The only remaining credible rival, André Milongo, withdrew his candidacy three days before the election day, claiming that the election would be rigged.

By his forensic management methods, which he refined during an impressive spell at Watford, he is quietly fashioning Cardiff into credible rivals.

The shining example is the Firefox browser that is available free for download and has emerged as a credible rival to Microsoft's Internet Explorer.

They had kept a closer eye on more credible rivals.

Given Pakistan's problems, Mr. Rahman said, the general might do worse than to share some of his burden with credible and democratic rivals.

And they made Mr. Jackson a more credible rival for the big primaries ahead.

Apparently, Nixon also began looking for dirt on Edward M. Kennedy (and Chappaquiddick) that might undermine him as a credible rival in the 1972 elections.

For, partly because deregulation has been so slow, they have few credible domestic rivals.

Futterman and Bell found Harmony a credible rival to Rachel vocally, and eagerly anticipated future competition between them.