ProUCL
ProUCL is for Pro Upper Confidence Level and it can be downloaded along with manuals etc from https://www.epa.gov/land-research/proucl-software
While it does UCL it also does several other test including:
Upper Cofidence Levels
Trend analysis by Mann Kendall and Theil-Sen
Normality / Goodness of fit by Shapiro-Wilks and Lilliefores
Outlier Test
ANOVA
Graphs (Notched Box, histograms, Multi QQ plots, timeseries with confidence and prediction limits)
Estimation of nondetect values.
Hypothesis Testing (Single Sample)
t-Test
Propotion
Sign Test
Wilcoxon Signed Rank Test
Hypothesis Testing (Two Sample)
t-Test
Wilcoxon-Mann
Quantile test
In March 2011, EPA offered a 2 part webinar about using ProUCL. Below are links to the PDFs of the webinar with my notes on them (also have the times on them so it is easy to jump around on the audio files) and a link to the audio files
Part 1 Notes and Audio
Part 2 Notes and Audio
Also here are 2 files to help jump start you