Yes, both Splunk Enterprise and SenseLogs offer a Free Trial.
Splunk Enterprise is designed for Large Enterprises and Medium Business.
SenseLogs is designed for Freelancers, Medium Business and Small Business.
Pricing for Splunk Enterprise Starts at $150/Month whereas for SenseLogs Starts at $12/Month.
Some top alternatives to Splunk Enterprise includes Reveal, Sprinkle Data, Data Monkey, Knarr, Iteratively, Splunk Cloud, Easy Insight, dataSights, Squirro Service Insights and Data Suisse.
Some top alternatives to SenseLogs includes Qualified, Workvivo, TheLog, iterspace, BulletLog, ezyLogs, IFTTT, Online Check Writer, Phplogger, Logz.io and InsightOps.