Pleased; contented; unruffied; undisturbed; serene; peaceful; tranquil; quiet; gentle.

free from disturbance; "a ribbon of sand between the angry sea and the placid bay"; "the quiet waters of a lagoon"; "a lake of tranquil blue water reflecting a tranquil blue sky"; "a smooth channel crossing"; "scarcely a ripple on the still water"; "unruffled water"

without untoward incident or disruption; "a placid existence"; "quiet times"

not easily irritated; "an equable temper"; "not everyone shared his placid temperament"; "remained placid despite the repeated delays"

Placid is a Web-based frontend for Snort that uses MySQL. It supports searching, sorting, and graphing of events, and was designed for speed and to have little overhead.

taking life easy; "an easygoing man rarely stirred to anger"; "an air of placid sufficiency"

3D Modeling application based on OpenGL for Linux, OS X and Windows.