DirectWave is one of the most complete VSTi sampler currently available. The demo's in this player are created using Varazdin Orchestral and don't come with DirectWave by default.
Opens all your sounds*
It loads and edits most of the existing sound formats³ out there (WAV (any), SF2 (Soundfont), AKP (Akai), Propellerheads Recycle, Native Instruments Battery, Kontakt *(nki), GIGA *(gig) & eMagic EXS24, ...) and it can even sample your existing VSTi instruments.
Realtime sampling / recording of whatever is connected to DirectWave inputs (needs modular host or host with assignable plug-in routing)
Record Threshold: sampling input will wait until signal peak arises (-40dB)
Built-in VSTi host to easily automate "sampling" of your vst instruments directly into DirectWave
Total Recall operation mode: DirectWave will enclose all the required sample data in the project files created by your host: it creates totally portable projects without worrying about needed sample files
Several importing methods: built-in browsing, drag&drop, menu options
Built-in fast library browser list and tree-arranged menu program selector.
Zone editor with visual zone arrangement map and list with all zone properties
All program/zone parameters of all channels can be automated as VST parameters
*WARNING: DirectWave will not import the above formats if they have been encrypted/protected. Encryption is sometimes used by vendors to prevent non-native import of program files (they want you to buy their sampler) so check with the vendor they are not encrypyted/locked to a given sampler if you are planning to purchase any of these formats for use with DirectWave and/or test out the demo of DirectWave to see if it works BEFORE you buy it.