Small airlines use a collection of software between their business, if they do their own maintenance they use a tool like AMOS (<a href="http:&#x2F;&#x2F;www.swiss-as.com&#x2F;main.do" rel="nofollow">http:&#x2F;&#x2F;www.swiss-as.com&#x2F;main.do</a>) which is produced by a subsidiary of Lufthansa, then another tool like sabre (<a href="http:&#x2F;&#x2F;www.sabreairlinesolutions.com&#x2F;home&#x2F;software_solutions&#x2F;enterprise_operations&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.sabreairlinesolutions.com&#x2F;home&#x2F;software_solutions...</a> ) to manage crew, flights planning etc. Bigger airlines will probably use SAP.<p>The hardware is going cloud based&#x2F;vm but due to a ton of legacy and regulation concerns (i.e. data protection, rules regarding data access in the event of accidents etc) it&#x27;s very slow going and most companies will still host their own servers, with maybe a company-wide shared oracle&#x2F;db instance.<p>The market is strangely competitive, though it has become quite stale in my opinion. RAMCO (<a href="http:&#x2F;&#x2F;www.ramco.com&#x2F;aviation-suite&#x2F;campaign&#x2F;aviation&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.ramco.com&#x2F;aviation-suite&#x2F;campaign&#x2F;aviation&#x2F;</a>) are the closest thing to a &quot;disruptive&quot; force, but their software is widely regarded as flashy with little meat to it (and a lot of glitches).<p>Source: developer for one of the MRO software providers (not listed here)