  In this paper, we describe a new method to select globular cluster (GC)
candidates, including galaxy subtraction with unsharp masking, template fitting
techniques and the inclusion of Gaia's proper motions. We report the use of the
12-band photometric system of S-PLUS to determine radial velocities and stellar
populations of GCs around nearby galaxies. Specifically, we assess the
effectiveness of identifying GCs around nearby and massive galaxies (D $< 20$
Mpc and $\sigma > 200$ km/s) in a multi-band survey such as S-PLUS by using
spectroscopically confirmed GCs and literature GC candidate lists around the
bright central galaxy in the Fornax cluster, NGC 1399 (D = 19 Mpc), and the
isolated lenticular galaxy NGC 3115 (D = 9.4 Mpc). Despite the shallow survey
depth, that limits the present work to $r < 21.3$ mag, we measure reliable
photometry and perform robust SED fitting for a sample of 115 GCs around NGC
1399 and 42 GCs around NGC 3115, recovering radial velocities, ages, and
metallicities for the GC populations.
