I'd say out of these libraries only Lucene and Sphinx are worth mentioning.

There's also MG4J, which wasn't covered and has a nice algorithmic background.
Anybody knows other interesting open-source search engines?

On Tue, Jul 7, 2009 at 00:39, John Wang<john.w...@gmail.com> wrote:
> Vik did a very nice job.
> One thing the experiment did not mention is that Lucene handles incremental
> updates, whereas many of the other "competitors" do not. So the indexing
> performance comparison is not really fair.
> -John
>
> On Mon, Jul 6, 2009 at 8:06 AM, Sean Owen <sro...@gmail.com> wrote:
>>
>>
>> http://zooie.wordpress.com/2009/07/06/a-comparison-of-open-source-search-engines-and-indexing-twitter/
>>
>> I imagine many of you already saw this -- Lucene does pretty well in
>> this "shootout".
>> The only area it tended to lag, it seems, is memory usage and speed in
>> some cases.
>>
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>
>


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